59,999 results

Astronomy
Few question about astronomy: 1.how many centimetres is equivalent to a light-nanosecond 2. How long is an astronomical unit (AU) in light-minutes (1min, i.e., the distance that light travels in a vacuum in one minute)? Please show the calculation if there is any Thanks

astronomy
what good has astronomy produced?

astronomy
Two stars in a binary system are determined from their position on the H-R diagram and the mass-luminiosity relation to have a combined mass of 8 M. Their orbital period, P, is 1 year. What is their orbital seperation, a? http://en.wikibooks.org/wiki/Astronomy/Mass

astronomy
what are the contributions of astronomy?

astronomy
what is the meaning of astronomy?

Astronomy

Astronomy

astronomy

science
I have to find out some facts about the dwarf planet vulcan. I have tried wikipedia but it was no help. Can any one please give me some facts or websites that can. This may be what you need. http://www.space.com/scienceastronomy/astronomy/epsilon_vulcan_000804.html

Astronomy 1010
What are six regions of the electromagnetic spectrum? please detail and answer

Astronomy 1010
Do all wavelength of light make it through the atmosphere? Explain. please detail help and answer

Astronomy
so i know that theres something Astronomically wrong with this quote but cannot figure out exactly what, would appreciate some help!!! "There's a full moon rising just about midnight, theres a high tide comin' 'round just about dawn" PLEASE, PLEASE, PLEASE, HELP ME!!!

Astronomy
Why is most of the mass of the solary system contained in the Sun? Briefly describe the protoplanet theory of planet formation. Please help. thanks.

Astronomy 1010
Which of the following are related to one another, and which is independent of the others? (Amplitude, Frequency, Period, Wavelength). Please detail help and answer..

Astronomy
The luminosity of the Sun is 4*10^33 erg/s, and its radius is 7*10^10 cm. What is the Sun's effective temperature? Please enter your answer in units of Kelvin.

Astronomy/Physics
I cannot calculate the gravitational force between these two objects. I am confused. Jupiter (R=800 million km, M = 2 x 10 to the 27th power kg and a 100 kg person on earth. Please help!

Astronomy
On the Autumnal Equinox, you see the Moon in the Waxing Crescent Phase at an angle of 45 degrees above the western horizon. What is the approximate local time? Can someone please explain how to obtain the answer? Thank you!

Science- Astronomy
Suppose we find a planet in another solar system that has an earth like atmosphere with plentiful oxygen but no life of any kind. Question= Is this discovery considered reasonable or surprising can you please explain? Thank you

Social studies
Mayan priests interest in astronomy led to the creation of ____. A. a 365-day calendar B. A book of rules C. Human sacrifices D. Cave paintings Which one is correct ? Please help

STILL HAVE NOT GOTTEN AN ANSWER FOR THIS!! If the Hubble parameter is found to be smaller than we think it is, how would this change the measured age of the universe? justify your answer

Science- Astronomy
How are Earth and Venus different? I already wrote that they have different atmospheres but I need another reason why are different so can someone help me please?

Astronomy
Need some help with Astronomy. I need to figure out the acceleration of gravity on the surface of certain planets. For example, I need to find the acceleration of gravity on Mars when the mass is .11 times the mass of Earth and the radius is .53 times the radius of Earth. ...

Astronomy 1010
How is red light different blue light? ( Besides the obvious answer of ¡°their color¡±¡¦) please a detail help and answer

Astronomy 1010
How is red light different blue light? ( Besides the obvious answer of ¡°their color¡±¡¦) please detail help and answer

astronomy
Even though I do not believe the Big Bang is what created the universe(although what people clam the bing bang was would have been similar to what happened when God said "Let there be light" I still have astronomy hw. haha. I am having trouble with this question. The big bang ...

astronomy & space
What is the redshift of a galaxy which lies at a distance of 50 mpc, asssuming that the hubble constant is H_0 = 67 km s^-1 Mpc^-1? assume that the speed of light is c=3.0x10^5 Km s^-1 please answer to an accuracy of 2 sig figs. Thankyou.

Using Hubble's law, determine the recessional velocity of a galaxy 700 Mly away. Use 22 km/s/Mly for the Hubble's parameter. Show your work for full credit

Astronomy 1010
You have two objects that are the same size, but one is significantly hotter than the other.How are the spectra of two objects different from one another? please detail help and answer..

astronomy
In space, the angular resolution of the Keck telescope is govererned by the diffraction limit. How far away could you read the same book, using the Keck telescope in space? Please express your answers in units of meters.

astronomy
Why is the sky blue?

Astronomy
What is the radius of the sun?

Astronomy
The saros cycle

Astronomy
What is the phenomenon of differentiation and how does it occurs

Astronomy
Why are there different types of galaxies?

astronomy
How long is the precession cycle?

Astronomy
What type of spectrum is sunlight?

Astronomy
The precession of the Earth its causes, and its ramifications

astronomy
What does supernova produce, helium or carbon?

astronomy
What does supernova produce, helium or carbon?

Astronomy
What is the Lorentz factor for a spaceship traveling at 0.5c?

Astronomy
what are the largest stars in the HR diagram called?

astronomy
big bang theory define

Astronomy
How to find the orbital radius of a planet?

astronomy
which of the statment about CMB are true?

Astronomy HELP
when does a full moon rise and set?

Astronomy
F = GM1M2/R2 = (6.67x10-11 x 1.9891x1030 x 25) / (3000)2 =

astronomy
A geosynchronous satellite is a satellite whose orbital period matches the rotation of the Earth. Calculate the height above the surface of the Earth which a satellite must have in order to be in a geosynchronous orbit. (Please enter your answer in units of kilometers)

astronomy
A geosynchronous satellite is a satellite whose orbital period matches the rotation of the Earth. Calculate the height above the surface of the Earth which a satellite must have in order to be in a geosynchronous orbit. (Please enter your answer in units of kilometers)

A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does the force of gravity at its surface increase, decrease, or stay the same? Why? Also, What would happen to the surface gravity as the radius of the ...

astronomy
The luminosity of the Sun is 4*10^33 erg/s, and its radius is 7*10^10 cm. What is the flux of sunlight on the Earth? i answer flux = luminosity/4pi*d^2 = 4*10^33/4pi*49*10^20=.....0,0064994151*10^13=6.49*10^10 erg/cm^2/sec thank you .please help me...

astronomy
why does Venus have such a high Albedo

astronomy
on which planets would you weih more than on the earth?

Astronomy
Venus orbits 0.72 AU from the sun. What is that distance in kilometers?

Astronomy
Venus orbits 0.72 AU from the sun. What is that distance in kilometers?

Astronomy
Explain what occurs during tidal friction?

Astronomy
How many degrees of longitude does the Sun move in each hour?

ASTRONOMY
Compare Einstein and Newton's pictures of gravity.

AStrONomY
What contributions of Uranus were made by the Voyager 2 program?

Astronomy
The frequency of a radio transmitter is 90 megahertz. What is its wavelength?

Astronomy
Why is it possible to see Mercury at 6:45 pm on February 5, 2014?

Astronomy
How far will Venus be from Earth on February 19, 2014?

astronomy
If the planet is in an edge-on orbit, what would its mass be (in kg)?

astronomy
Mars currently has a liquid convecting core.

astronomy
Which of the following two telescopes has a better angular resolution? 1) the Hubble Space Telescope (2.4 meter aperture) at optical wavelengths and 2) the Very Long Baseline Array (VLBA), a radio interferometer with a maximum baseline of 8600 km observing at 1 mm wavelengths...

astronomy
Which of the following two telescopes has a better angular resolution? 1) the Hubble Space Telescope (2.4 meter aperture) at optical wavelengths and 2) the Very Long Baseline Array (VLBA), a radio interferometer with a maximum baseline of 8600 km observing at 1 mm wavelengths...

astronomy
Which of the following two telescopes has a better angular resolution? 1) the Hubble Space Telescope (2.4 meter aperture) at optical wavelengths and 2) the Very Long Baseline Array (VLBA), a radio interferometer with a maximum baseline of 8600 km observing at 1 mm wavelengths...

Astronomy
Describe in one sentence the rotations and revolutions of the planets.

Astronomy
If the elipse were a planet's orbit where would the sun be on the page?

astronomy
on which planets would you weigh nearly the same as on earth?

astronomy
How are cepheid and rr lyrae variables used in determining distances?

astronomy
Explain the cause of the Earths' season. I need a diagram for my explanation

U of M astronomy
if a planet has a period of 1 century, what is its average distance from the Sun in AU?

astronomy
What is the electromagnetic flux coming from the surface of a 5000K blackbody?

astronomy
Why the Universe ,as we know it,made of matter,with no antimatter,and what is the role of neutrino? Thanks

Astronomy
Why is it possible to see the planet Mercury at 6:45 pm on February 5, 2014.

Astronomy
What five object were found in the sky on February 5, 2014 at 9 pm.

Astronomy
Why is the portion of Venus opposite the direction of the Sun not apparent.

Astronomy
Why is the portion of the Moon opposite the direction of the Sun not apparent?

Astronomy
How do astronomers know whether they are seeing planets or stars when they are distant?

astronomy
Astronomers can use the color of an object in space to determine its

Phyics - Astronomy
You are standing at a latitude of 35 degrees South. Star x is currently at an azimuth of 45 degrees and an altitude of 50 degrees. What is the azimuth and altitude coordinates of Star X 3 hours later? I don't know how to do this. If anyone knows how to calculate this please ...

Astronomy
How did the voyager mission change our preconception of Jupiter and its moons

astronomy
why is it necessary for ultrviolet telescopes to be placed on a space-based platform? thanks

Astronomy
What are two pieces of evidence that the earth is a highly differentiated body

Math/Science/Astronomy
What is the formula to calculate the illumination fraction of the Moon?

Astronomy
Does the = sign in the equation E=mc2 mean that energy and light are equivalent

Astronomy
Do people wear seatbelts to protect themselves from speed or acceleration?

chemistry
Which of the following is not an example of a science? geology astronomy astrology ecology

chemistry
Which of the following is not an example of a science? geology astronomy astrology ecology

Astronomy
If I was born on August 12, 1953 what is the constellation of my Astrological"Sun Sign".

Astronomy
What is my Astrological "Sun Sign" and how was it determine if I was born on August 12, 1953.

ASTRONOMY
Good evening all, I am working on a PowerPoint presentation for my Astronomy class about planet Earth - my question is: What is Earth's brightest apparent magnitude (if it has one)? I have searched every reliable source I know of (and that I come across), but I cannot seem to ...

Astronomy
Why is the time at which leo transits the meridian different for mexico city and chicago?

Astronomy
Is the ellipse more circular when the tacks are closer together or farther apart?

Astronomy
Is the elipse more circular when the tacks are closer together or farther apart?

Astronomy
How do observations of he sun's surface tell us about conditions in the solar interior?

College astronomy
What would be the parallax of Alpha Centauri if measurements were made from Mars?

english
Christina and Christopher worked together and completed a project about astronomy.

lang
A science that looks at atmosphere and the weather. A. Chemistry B. Meteorology C. Geology D. Astronomy d

Opinion
Which class would be better(easier) to take Earth Science or Astronomy?

1. Pages:
2. 1
3. 2
4. 3
5. 4
6. 5
7. 6
8. 7
9. 8
10. 9
11. 10
12. 11
13. 12
14. 13
15. 14
16. 15
17. Next>>

Post a New Question