Write a journal entry from the perspective of a particle of light, called a photon. Your story should follow the photon as it travels from a star in the Milky Way that is 25 light years away from Earth, all the way to the eye of a young person gazing up at the night sky through their bedroom window. Compose your entry in complete sentences. Be sure to answer these questions in your journal entry: • How long was the journey to Earth? • How fast did you travel? • Was your speed affected when you entered Earth’s atmosphere? If so, how? • Was your speed affected when you traveled through the glass of the window? If so, how? • What was the journey like to get to the retina?

Answers

Answer 1

Answer: i got your back

Astronomy (from Greek: ἀστρονομία, literally meaning the science that studies the laws of the stars) is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole.[1]

Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars. Nowadays, professional astronomy is often said to be the same as astrophysics.[2]

Professional astronomy is split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects. This data is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the development of computer or analytical models to describe astronomical objects and phenomena. These two fields complement each other. Theoretical astronomy seeks to explain observational results and observations are used to confirm theoretical results.

Astronomy is one of the few sciences in which amateurs play an active role. This is especially true for the discovery and observation of transient events. Amateur astronomers have helped with many important discoveries, such as finding new comets.

Explanation:


Related Questions

Design a Solution Describe steps you could take to develop an effective method for copying San Francisco sourdough bread. Assume that you have access to sourdough starter and all the ingredients and equipment you need.

Answers

So let me try to repeat that: San Francisco sourdough tastes sour because of a unique local bacteria called lactobacillus San Francisco. That, and a yeast called candida milleri are the real secret to San Francisco sourdough bread. In other words, the secret ingredient is no secret at all: It's blowing in the wind.

Which equation can be used to solve for acceleration?

Answers

Answer:

To do this you need to know equation for acceleration: a = Δv / Δt where a is acceleration, Δv is the change in velocity, and Δt is the amount of time it took for that change to occur. The unit for acceleration is meters per second per second or m/s2.

Explanation:

microscopic hair-shaped cells are referred to as_________​

Answers

Answer:

it is called cillia I think

ANSWER THIS ASAP!!! Describe the structure of a neuron. Include the cell body, dendrites, and axon in your description. How does the structure of a neuron help it carry out its function efficiently?

Answers

Answer:

Sensory neurons. Sensory neurons help you: ...

Motor neurons. Motor neurons play a role in movement, including voluntary and involuntary movements. ...

Interneurons.

Explanation:

glucose molecules are to starch as ________ are to proteins.

Answers

Answer:

Amino acids

Explanation:

Glucose molecules are to starch what amino acids are to proteins; the glucose molecules are the monomeric units of the starch, just as the amino acids are the monomeric units of the protein.

What is the significance of the monomers?

Polymers such as starch, protein, and fatty acids are found in living bodies such as those of animals and plants and polymers are made up of monomeric units such as glucose monomers that are bonded to each other by glycosidic bonds make starch, and amino acids are the monomeric units of proteins that are bonded by peptide bonds. These are necessary for the storage molecule, as well as for the cell's structural and functional units.

Hence, glucose molecules are to starch what amino acids are to proteins; the glucose molecules are the monomeric units of the starch, just as the amino acids are the monomeric units of the protein.

Learn more about the monomers here.

https://brainly.com/question/29340352

#SPJ5

What two types of organic molecules make up carbohydrates?

Answers

Answer:

carbon and hydrogen

Explanation:

Have a nice day

There are two types of reproduction, sexual and asexual Sexual reproduction involves two parents, while asexual reproduction only involves one,
Sort the reproductive processes below according to whether they are asexual or sexual.
ITEM BANK: Move to Bottom
Creation of an egg
Creation of fruit
Mushrooms producing spores
Production of seeds
Stem cuttings of plants
Sexual
Asexual
Budding in yeast
drag and drop answer here
drag and drop answer here

Answers

Creation of an egg- sexual

Creation of a fruit - sexual

Mushrooms producing spores - Sexual

Production of seeds - Sexual

Budding in yeast - Asexual

Stem cuttings of plants - Asexual

How long is the interval between high tides in Boston?

Answers

Answer:

High tides occur 12 hours and 25 minutes apart.

Explanation:

cells in the nervous system which have various functions related to support and nourishment are called:

Answers

brain or nervous system cells are called as neurons

Cells in the nervous system which have various functions related to support and nourishment are called glial cells.

What are the functions of glial cells?

Glia, also called glial cells (gliocytes) or neuroglia, are non-neuronal cells in the central nervous system (brain and spinal cord) and the peripheral nervous system that do not produce electrical impulses.

Functions include: clean up brain "debris"; transport nutrients to neurons; hold neurons in place; digest parts of dead neurons; regulate content of extracellular space; promote synaptic connections.

Any of the cells that hold nerve cells in place and help them work the way they should. The types of glial cells include oligodendrocytes, astrocytes, microglia, and ependymal cells.

Learn more about glial cells:

https://brainly.com/question/14921045

#SPJ2

any one interested in revising Biology nutrition in animals?​

Answers

Answer:

yes...let's do it am interested

Answer:

yeah I am interested in revision

4. Arrange Write the following steps in the order in which they occur during glycolysis

A six-carbon molecule is broken down into two three-carbon molecules.

Two NADP molecules are converted into two NADH molecules.

Two phosphate groups from two ATP molecules are joined to glucose.

Two three-carbon molecules are converted into two Folecules of pyruvate as four
molecules of ATP are produced.

Answers

The correct order of glycolysis reactions is:

Two phosphate groups from two ATP molecules are joined to glucose.Two NADP molecules are converted into two NADH molecules.A six-carbon molecule is broken down into two three-carbon molecules.Two three-carbon molecules are converted into two molecules of pyruvate as four  molecules of ATP are produced.

During glycolysis, the glucose molecule is converted to Glucose-6-phosphate as a result of phosphorylation. The phosphate group from ATP is joined to the glucose molecule by an enzyme known as hexokinase.

The glucose-6-phosphate then undergoes isomerization to become fructose-6-phosphate which is then phosphorylated again by the hexokinase enzyme to become fructose-1,6-biphosphate.

An aldolase enzyme converts fructose-1,6-biphosphate to one molecule of glyceraldehyde-3-phosphate and one molecule of dihydroxyacetone phosphate. The latter is then converted to another molecule of glyceraldehyde-3-phosphate.

A dehydrogenase enzyme converts glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate with NADH being generated from the reduction of NAD+.

A kinase enzyme then converts 1,3-bisphosphoglycerate to 3-phosphoglycerate with ATP being generated from ADP. A mutase enzyme quickly converts the 3-phosphoglycerate to 2-phosphoglycerate while an enolase enzyme converts the latter to phosphoenolpyruvate.

Finally, a pyruvate kinase enzyme converts phosphoenolpyruvate to pyruvate with another ATP being generated.

More on glycolysis can be found here: https://brainly.com/question/10886602?referrer=searchResults

What are the longest and shorted wavelengths of sound that humans can hear.

Answers

Answer:

Extremely high-pitched sounds that are on the other edge of the range that humans can hear have smaller wavelengths around 17 mm and frequencies around 20 kHz (kilohertz, or thousands of Hertz). What are the longest wavelengths? Red has the longest wavelength and violet has the shortest wavelength.

Explanation:

deoxygenated blood is transported to the pulmonary capillaries in the lungs by the pulmonary veins; oxygenated blood is transported away from the pulmonary capillaries by the pulmonary arteries is false

Answers

Answer:

no it is not false can be transported

what is the proton gradient in cellular respiration?

Answers

Answer:

The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.

A proton gradient is a difference in the concentration of protons (H+) across a membrane. In cellular respiration, a proton gradient is created by the electron transport chain (ETC) in the mitochondria.

The ETC is a series of proteins that shuttle electrons from NADH and FADH2 to oxygen. As the electrons are shuttled, they lose energy, which is used to pump protons out of the mitochondrial matrix into the intermembrane space.

This creates a concentration gradient, with more protons in the intermembrane space than in the mitochondrial matrix.

The proton gradient is used to power ATP synthesis. The enzyme ATP synthase, which is located in the inner mitochondrial membrane, uses the energy of the proton gradient to drive the synthesis of ATP from ADP and inorganic phosphate (Pi).

The proton gradient is a key part of cellular respiration, and it is essential for the production of ATP. Without the proton gradient, ATP synthesis would not be possible, and cells would not be able to produce the energy they need to function.

To know more about proton gradient:

https://brainly.com/question/4743578

#SPJ6

edwin hubble developed a classification scheme for galaxies. by what characteristic did he classify galaxies?

Answers

Edwin Hubble classified galaxies according to their SHAPE. He was one of the most recognized astronomers in the last century.

Edwin Hubble was fundamental for deciphering the nature of the Universe.

Edwin Hubble developed a system to classify galaxies according to their shape into four types: spiral galaxies,  elliptical galaxies, barred spiral galaxies, and irregular galaxies.

E. Hubble also categorized spiral galaxies depending on the central bulge size and arm texture.

Learn more in:

https://brainly.com/question/2905713

what is the process which increases carbon dioxide levels in the air

Answers

Answer:

organisms respire or decompose (decay)

explain one weakness of using the human nervous system to explain human behaviour

Answers

Your nervous system guides almost everything you do, think, say or feel. It controls complicated processes like movement, thought and memory. It also plays an essential role in the things your body does without thinking, such as breathing, blushing and blinking.

what is phototropic?​

Answers

phototropic

to grow directionally in response to a light source.

What transformation takes place wen u light up a match

Answers

Answer:

Transformation that happens when you strike a match is from mechanical energy to thermal energy.

Explanation:

When you strike a match, it moves through the air until it rubs against a surface. The rubbing produces the heat required to light the match. (Thermal energy is heat energy)

Answer:

mechanical energy to thermal energy.

Explanation:

When the match is struck, it burns and the chemical energy in it produces heat energy and light energy

When you strike a match, it moves through the air until it rubs against a surface. The rubbing produces the heat required to light the match. This is a transformation from mechanical energy to thermal (heat) energy.

How was Earths climate changed over time?

Answers

Answer:

Explanation:

These changes have been triggered by the changing configuration of continents and oceans, changes in the Sun's intensity, variations in the orbit of Earth, and volcanic eruptions.

Anwser this Please Thank you

Answers

Answer:

1. It can make people feel better and respected

Explanation:

Identify the scenario that could potentially result in new combinations of DNA in the offspring of the individual.(1 point)

An error that happens during DNA replication in a cancerous lung cell during before mitosis.

Sister chromatids fail to separate during anaphase of mitosis in a heart cell.

Exposure to UV radiation causes a mutation in a skin cell that is repaired by the cell.

A pair of homologous chromosomes fails to separate during anaphase I of meiosis.

Answers

Answer:

A pair of homologous chromosomes fails to separate during anaphase I of meiosis.

The scenario could potentially result in new combinations of DNA in the offspring of the individual is a pair of homologous chromosomes fail to separate during anaphase I of meiosis. The correct option is d.

What is DNA?

DNA is deoxyribose nucleic acid. The information molecule is DNA. It stores instructions for the production of larger molecules known as proteins.

These instructions are stored within each of your cells and are distributed across 46 long structures known as chromosomes. These chromosomes are composed of thousands of shorter DNA segments known as genes. During anaphase, I of meiosis, a pair of homologous chromosomes fails to split.

Therefore, the correct option is d, A pair of homologous chromosomes fails to separate during anaphase I of meiosis.

To learn more about DNA, refer to the link:

https://brainly.com/question/29514935

#SPJ2

Number 4……………………………..

Answers

If the new gene "works", then it will synthesize a missing enzyme or structural protein. A gene is a protein-coding nucleotide (DNA) sequence.

A gene is a fragment of DNA that is used by the cell to create a complementary mRNA sequence by a process called transcription.

Subsequently, this mRNA is then used to synthesize a protein by a process called translation.

When a gene is defective, a change in the nucleotide sequence (i.e., a mutation) can restore normal gene function and thus produce a functional protein.

Learn more in:

https://brainly.com/question/4275010

which of these organs is an accessory organ of the digestive system?

Answers

Answer:

Where is the picture??

Explanation:

Which of the following nerves is responsible for your sense of smell?

Answers

Answer:

d. Olfactory nerve

Explanation: is correct

Answer:

D) Olfactory nerve

Explanation:

The olfactory nerve is the first cranial nerve (CN I). It is a sensory nerve that functions for the sense of smell.

Hope this helps :)

A planee is flying at a speed of 250 miles per hour. How long does it take to fly 250 (show steps)

Answers

it's 1 hour

lord have mercy. another genshin player

explanation: divide the distance traveled by the rate of speed. since the distance traveled and the rate of speed are both stated in the same units of measurement, there's no unit conversion needed. so, you can just convert the miles per hour to miles per second, and then convert the total seconds to the hours/minutes or whatever


This should be the answer

What controls basic functions such as breathing, heart rate, and pulse?


A.cell body

B.spinal cord

C.frontal lobe

D.brain stem

Answers

The brain stem sits beneath your cerebrum in front of your cerebellum. It connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate and blood pressure.

Answer: brain stem

What condition occurs when epidermal cells are created too quickly? a. Acne c. Psoriasis b. Skin cancer d. Chicken pox.

Answers

The condition that occurs when epidermal cells are created too quickly is known as psoriasis. In this disease, the cell cycle of skin cells is abnormally accelerated.

Psoriasis is a skin disease associated with itchy patches of thick, red skin, especially in the knees, trunk, and scalp.

Psoriasis is an autoimmune disease caused when the immune system attacks healthy skin cells.

Psoriasis is well characterized by hyperproliferative keratinocytes, which are the most prominent type of cell within the epidermis.

Learn more in:

https://brainly.com/question/6357052

dna is a double-stranded molecule made up of complementary, antiparallel strands. based on what you know about complementary base pairing, fill in the rest of the details in the figure.

Answers

The details in the figure correspond to the elements that the DNA strands have in their ends. Also, they correspond to the antiparallel strand with the complementary bases.

The DNA has two antiparallel strands with complementary bases (thymine, adenine, guanine, and cytosine). That is to say, that T pairs with A and G with C. Also, they have specific elements in their ends.

The 3' strand in its end has a hydroxyl (OH) group.The 5' strand in its end has a phosphate group.There is a complementary strand with its respective nucleotides that will pair with the other strand according to their specific bases (A-T; C-G)

In conclusion, the top left end of the 3' strand has a hydroxyl group, while the top right, the 5', has a phosphate group. The complementary strand will go the other way round, from 5' to 3', so the hydroxyl and phosphate groups would be on the right and the left, respectively. The bottom strand is the complementary one, and it runs from 3' to 5'.

Learn more at:

https://brainly.com/question/24086064

Hebbenennennemnejnbnnsnjsjjdjd

Answers

Answer:

C

Explanation:

It increases with temperature then decreases when its too high

the answer is c the rate increases with temperature
Other Questions
What is different about normal cell division and cancer cell division? 1) The stomach is an organ of the digestive system. It is made up of several types of tissue that work together. What kinds of tissue make up the stomach? Choose ALL that apply.A) nervousB) smooth muscleC) dense connectiveD) simple columnar epithelialE) stratified squamous epithelial Charlotte measured the temperature at 7:00 A.M. and again at 3:00 P.M., She placed both measurements on a number line.How did the temperature change between 7:00 A.M. and 3:00 P.M.?A. It increased by 3/4 C.B. It decreased by 3/4C. C. It increased by 11 and 3/4 C.D. It decreased by 11 and 3/4 C. At most, a country could produce 20,000 units of Good A or 5,000 units of Good B. What is the opportunity cost of producing oneunit of Good B in terms Good A? (1 point)o unit of Good Bo 1 unit of Good A4 units of Good BO 4 units of Good A Read the advertisement for employment.Help Wanted: House sitter needed to watch house while owner is out of town. Job requires overnight stays two to three nights a week, some weeks more. Flexibility is required. Experience preferred. Submit references with rsum. Use the details in the advertisement to answer the big-picture question: "Which person would most likely apply for this job?a single parent who has three young children to supporta college student who has some free timea college student who has a busy part time joba teenager who has to be home by 9 p.m. every nightMark this and return 1 ton of methanol are accidentally discharged into a lake. By how much is the biological oxygen demand of this water increased Can some please write an interesting summary on Our Planetwhich is on Netflix the term used to describe a woman during her first pregnancy is a Analyze how romanticism, realism, and impressionism reflected the culture of the Industrial Age. Imagine that you have an image that is too dark or too bright. Describe how you would alter the RGB settings to brighten or darken it. Give an example. What is the cost to make one flag? pls answer fastWrite an equation of the line that passes through (0, -5) and is perpendicular to the line y =-4/5x Is the amendment process to easy or to difficult? I need it for an essay! :) Someone plz help me :( D. The faster pace creates tension to show the narrators fear that Jaxon will get lost An engine that creates ignites fuel with highly compressed air. Workplace safety measures that can help prevent disasters like the Deepwater Horizon oil spill include: What role did the need for land and other natural resources play in Confederation? How did those needs lead the colonies to unite? (Canada) how long does it take saturn to rotate on its axis sadlier unit 10 level a complete the sentence :)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))