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Felicia's user avatar
Felicia's user avatar
Felicia's user avatar
Felicia
  • Member for 2 years, 7 months
  • Last seen more than 1 year ago
Profile Activity

11 Questions

Score Activity Newest Views
20 votes
2 answers
3k views

Has the small meteorite that hit Webb done a lot of damage?

4 votes
1 answer
100 views

What does it mean that the radial coordinate becomes the time coordinate behind the horizon?

4 votes
0 answers
70 views

If the universe is a closed spacetime structure, can we assign a center of mass to it?

4 votes
1 answer
255 views

Why is the Hubble parameter constant for an accelerating universe?

2 votes
4 answers
2k views

Should we fear Wolf-Rayet WR-104?

2 votes
1 answer
133 views

Can virtual particles with zero energy and non-zero momentum contribute to dark energy?

1 vote
1 answer
75 views

How would a balloon structure of a universe look if we collected all mass together in a small region?

1 vote
2 answers
132 views

Could primordial black holes explain the SMBH in the galactic centers?

1 vote
1 answer
137 views

What's the proper shape of a black hole?

0 votes
1 answer
97 views

How does a black hole look like independently of coordinates?

-1 votes
1 answer
189 views

Wouldn't the 1054 supernova have temporarily enlightened the Earth like the Sun?