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Active 1 Bountied Hot Week Month
-1 votes
2 answers
133 views

Is it possible to view the sun and moon in the sky at the same time?

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CJ Winters
  • 29
0 votes
0 answers
8 views

Are multiple stars actually more populous than singles?

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Jimmy Bionic
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1 vote
1 answer
24 views

Ejected galaxies, dynamical friction and dark energy?

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Anders Sandberg
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0 votes
0 answers
15 views

Number of neutron stars by radiation band

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Jimmy Bionic
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13 votes
1 answer
544 views

Are there mascons on Ganymede similar to the ones on the Moon? And if so, how will that impact JUICE when it orbits over Ganymede?

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Peter Mortensen
  • 291
0 votes
0 answers
51 views

What determines the length of an Eclipse season?

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George Lee
  • 325
3 votes
1 answer
108 views
+100

What can be learned by observing tumbling asteroid 319 Leona passing in front of Betelgeuse's fickle photocenter? What campaigns have been organized?

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uhoh
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2 votes
0 answers
27 views

Baryonic Tully Fisher Relation slope

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Al01
  • 21
0 votes
1 answer
53 views

How often do eclipses occur at any given place, if we include partial eclipses?

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Pierre Paquette
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0 votes
1 answer
75 views

How long are solar years on other planets?

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planetmaker
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2 votes
1 answer
43 views

How long is a lunar eclipse season, if we don't take in account penumbral eclipses?

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Pierre Paquette
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5 votes
2 answers
299 views

Where to find data on orbits of exoplanetary systems?

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Tyler Rolfe
  • 1
0 votes
1 answer
131 views

Are we really 13.8 billion light years from the big bang

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benrg
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20 votes
4 answers
6k views

What would happen if a small black hole fell into a star?

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fraxinus
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