user avatar
user avatar
user avatar
Constantthin
  • Member for 1 year, 4 months
  • Last seen this week
17 votes
7 answers
5k views

Why would the side of the moon that faces earth be as dark as the far side of the moon?

16 votes
1 answer
3k views

How many times brighter would full-earth-shine appear to people standing on the moon, than full-moon-shine does to people on earth?

12 votes
4 answers
3k views

Could Neptune be viewed with the naked eye from Uranus?

7 votes
2 answers
702 views

Does lack of atmosphere on the moon make earth-shine more, or less, bright?

4 votes
1 answer
147 views

How much mass is lost in the red giant phase of a sun?

2 votes
1 answer
92 views

Does a red giant star produce more stellar wind than a yellow star?

2 votes
0 answers
134 views

How can Bond Albedo be greater than Geometric Albedo?

2 votes
2 answers
151 views

Do the earth and the moon reflect the different fractions of total solar radiation proportionally?

1 vote
0 answers
182 views

How is bond albedo calculated?

1 vote
2 answers
59 views

Which unit is most suitable in comparing needed light intensity for night reading on the Moon, vs on Earth?

0 votes
1 answer
101 views

How can the author of this article conclude that earth-shine on the moon is 100 times brighter than moon-shine on earth? [duplicate]

0 votes
0 answers
103 views

What is the highest albedo of the earth's surface facing the sun ever measured?

0 votes
1 answer
109 views

Why does apparent magnitudes get increased fourfold when distances get halved, instead of simply getting doubled?

0 votes
1 answer
123 views

How does one find out how often planets align?

0 votes
1 answer
80 views

Is subtracting one apparent magnitude from another ever practical?

0 votes
1 answer
127 views

Will the planets be pushed outwards when the sun goes red giant?

-2 votes
1 answer
260 views

What is Saturn’s apparent magnitude at its brightest when viewed from Uranus?

-4 votes
2 answers
132 views

What is Jupiter's apparent magnitude as watched from Uranus?

-5 votes
2 answers
124 views

What is 5 in 5log10 the value of?