Ricky's user avatar
Ricky's user avatar
Ricky's user avatar
Ricky
  • Member for 8 years, 4 months
  • Last seen more than a month ago
  • United States
37 votes
2 answers
9k views

Why doesn't the moon twinkle?

16 votes
2 answers
3k views

What does the Sun's orbit within the Solar System look like?

15 votes
1 answer
359 views

How quickly does a supernova heat up/expand?

10 votes
2 answers
866 views

Is there any hard evidence that rogue planets exist?

8 votes
2 answers
619 views

Why aren't new stars in Earth's relative proximity constantly discovered?

8 votes
3 answers
770 views

How many new stars visible to the naked eye have appeared since humanity started making records?

5 votes
2 answers
1k views

When was the term "orbit" (in the modern sense) first used and by whom?

3 votes
2 answers
243 views

Has the existence of earth-sized rogue planets been confirmed?

2 votes
1 answer
565 views

If Mars were tidally locked to the Sun, what would the temperatures on its surface be like?

1 vote
2 answers
319 views

Can the centripetal force be inverted? [closed]

1 vote
2 answers
3k views

Could a star revolve around a planet? [duplicate]

0 votes
1 answer
216 views

Gravity assist: why is the velocity doubled? [closed]

-4 votes
2 answers
2k views

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

-4 votes
1 answer
139 views

How accurate are the calculations of the age of the Universe?