Curious about Astronomy? Ask an Astronomer!
Questions answered by graduate students, including a question and answer archive, information on the solar system, the universe, SETI, observational astronomy, careers and history.

Query User
astronomer entered by user 6014936
astronomy telescopes entered by user 6821
buy a star entered by user 1145801
color of the planets entered by user 4538275
color photos of the planets entered by user 16546916
color picture of night sky entered by user 2201974
comets and asteroids entered by user 3493263
comets meteors entered by user 2053513
computer in astronomy entered by user 2691350
did they really land on the moon entered by user 483349
distance between sun and moon entered by user 21316754
distance earth sun entered by user 559458
does the earth's moon have an atmosphere entered by user 11557376
dog days of summer entered by user 10692730
earth's period of revolution entered by user 5290865
end of the universe entered by user 4309571
extra large pictures of comets entered by user 18029742
falling stars entered by user 17563535
general information about moon entered by user 8670098
how can we see ourselves in the milky way entered by user 787824
how does the moon affect the earth's oceans entered by user 867953
how does the moon affect the earth's oceans entered by user ditto
how far is the earth from sun' entered by user 2436616
how long does it take for the earth to rotate 60 degrees entered by user 5569439
how to build a rocket entered by user 9536175
how to build water bottle rockets launch pads entered by user 5702282
http curious.astro.cornell.edu entered by user 19570291
largest galaxy entered by user 11308
largest star entered by user ditto
largest star entered by user ditto
life cycle of a star entered by user 4738454
light takes how long to reach earth entered by user 3373469
location of the sun at sunset entered by user 480340
location of the sun at sunset entered by user ditto
location of the sun at sunset entered by user ditto
location of the sun at sunset entered by user ditto
mass of our galaxy entered by user 126937
mass of our galaxy entered by user ditto
physical features of stars entered by user 1033894
planet colors entered by user 4658625
planet saturn's color entered by user 1436888
planets rings entered by user 16070421
planets with rings entered by user 3632146
planets with rings entered by user 8246642
rocket diagrams entered by user 12088020
science fair projects planets entered by user 1955833
sun distance entered by user 3169006
sunspots are entered by user 4579297
the 11th planet entered by user 980567
the big dipper entered by user 71845
the color of the planets entered by user 2463173
the main regions of the sun entered by user 1702712
the milky way pictures entered by user 699876
the moon is hollow entered by user 4469355
theory of planet formation in other solar systems entered by user 5011354
theory of relativity entered by user 5386896
what causes the moon to be orange entered by user 6576966
what color is mercury planet entered by user 9895689
what color is mercury planet entered by user ditto
what color is pluto entered by user 11139391
what color is the planet saturn entered by user 12387889
what do astronauts do entered by user 167916
what do astronauts do entered by user ditto
what do astronauts do entered by user ditto
what do astronauts do entered by user ditto
what do astronauts do entered by user ditto
what do astronomers study entered by user 191262
what does astronomy involve entered by user 167916
what does energy in astronomy mean entered by user 10537139
what does the milky way look like entered by user 191262
what is terrestrial life entered by user 16966158
what keeps the planets in orbit around the sun entered by user 17266605
what will happen when the sun dies entered by user 2679512
what will happen when the sun dies entered by user ditto
what would we expect if we look at other solar systems entered by user 5011354
when can you find the big dipper entered by user 6201808
when will the sun go out entered by user 1448724
who do astronauts do entered by user 167916
who do astronauts do entered by user ditto
who named the planets entered by user 4849954
why do all planets go around the sun in the same direction entered by user 2289897
why do the planets orbit the sun entered by user 534440
why do the planets revolve around the sun entered by user ditto
why shadow lengths change throughout year entered by user 8392442