Skip to main content

Explore our questions

12 votes
2 answers
3k views

Pluto has smooth ice plains, almost like lunar maria. Where did the heat come from to melt all that ice?

5 votes
1 answer
182 views

Why does the axis tilt (obliquity) of Earth change over time?

3 votes
0 answers
14 views

Why is Epsilon Indi Ab 2° celsius?

2 votes
2 answers
85 views

Where should I go in April 2029 for the best chance of naked-eye observing of 99942 Apophis (2004 MN4)?

2 votes
0 answers
38 views

Accurate angluar diameter calculations of the Moon and the Sun

4 votes
2 answers
832 views

From which notable Europa's surface features could be possible to observe Jupiter eclipsing the sun?

3 votes
1 answer
47 views

What does Colossus cosmology.sigma() return

11 votes
2 answers
2k views

Always orient a sundial towards polar north?

-2 votes
2 answers
3k views

Has the birth of a new star ever been observed (scientifically speaking)?

1 vote
0 answers
87 views
+100

What would sunsets look like around different star types?

6 votes
1 answer
72 views
+100

How did the Local Interstellar Cloud form?

1 vote
2 answers
68 views

Should I convert local time to UTC when computing the sun's position?

4 votes
1 answer
116 views

Why does the blue loop occur?

9 votes
1 answer
806 views

Could Charon still retain a subsurface ocean?

Browse more Questions