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the study of the universe its origin and evolution Started 6 months ago by guest	guest 2 months	2
Expanding universe, big bang, and light speed paradox... HELP! Started 7 months ago by guest	jlindsey 2 months	1
Is there light that has not reached us yet? Started 7 months ago by bgeriksen	drglenndritchie 7 months	1
When was the Open Universe Theory invented? Started 7 months ago by Lizz14	drglenndritchie 7 months	1
Where do meteoroids come from? Started 11 months ago by guest	guest 11 months	1
what two things can a massive star end as? Started 11 months ago by guest	drglenndritchie 11 months	1
Is is theoretically possible to create a miniature artificial star? Started 11 months ago by storyteller07	drglenndritchie 11 months	1
Will our sun turn into a black hole when it dies? Started 12 months ago by OggieR	drglenndritchie 12 months	1
all of the planets and their satellites orbit the sun in the same direction, and all their orbits li Started 12 months ago by yannie	drglenndritchie 12 months	1
What planet moves most slowly along its orbit? Started 1 year ago by guest	drglenndritchie 1 year	1
Northernv Hemishere Started 1 year ago by mmonteiro	drglenndritchie 1 year	1
why is there an equinox Started 1 year ago by mmonteiro	drglenndritchie 1 year	1
universe Started 1 year ago by guest	drglenndritchie 1 year	1
what are some interesting facts about mars? Started 1 year ago by guest	drglenndritchie 1 year	1
Science and Math Started 1 year ago by gatergirls12	jlindsey 1 year	1
Can an oxygen bomb exploded on Neptune create water for a space colony? Started 1 year ago by amclean	drglenndritchie 1 year	1
The original periodic table arranged elements by what Started 1 year ago by lilvegaschico22	drglenndritchie 1 year	1
How do we know that there wasn't more than one singularity at one point in the Big Bang? Started 1 year ago by Dondon	drglenndritchie 1 year	1
Light time travel/optical observations Started 1 year ago by Zee	jlindsey 1 year	1
which property of a star can be determined most directly from it's color Started 1 year ago by guest	drglenndritchie 1 year	1
Expanding universe? Started 1 year ago by Dan	drglenndritchie 1 year	1
Which planet is least like earth in size and composition? Started 1 year ago by krisim9849	drglenndritchie 1 year	1
How long does it take for the light from the sun to reach earth? Started 1 year ago by jonmega	jlindsey 1 year	1
what are gas giants? Started 1 year ago by guest	drglenndritchie 1 year	1
what is on the other side of the sun? Started 2 years ago by guest	guest 1 year	2
What does it mean if water is found on the moon? Started 2 years ago by drglenndritchie	drglenndritchie 1 year	1
most of uranus's atmosphere is composed of helium and hydrogen which causes its atmosphere to r Started 1 year ago by guest	drglenndritchie 1 year	1
what do the seasons have to do to support the idea that earth revolves around the sun ? Started 1 year ago by guest	drglenndritchie 1 year	1
how does the tilt of the earth support the idea that earth revolves around the sun ? Started 1 year ago by guest	drglenndritchie 1 year	1
the blank of a star determines its temperature, luminostiy, and diameter Started 1 year ago by guest	drglenndritchie 1 year	1