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0 votes
1 answer
25 views

How to look up "all things astrophysical" about A=9 (or other light isobars)?

Rob
  • 1,569
0 votes
0 answers
7 views

What would a kilonova look like "up close"?

The_Sympathizer
  • 1,066
0 votes
2 answers
47 views

Is the Vernal Point a fixed point on the sky?

Greg Miller
  • 2,887
1 vote
0 answers
47 views

What is the brightness and size of Jupiter from the Galilean moons, the closest moon, and the farthest moon?

uhoh
  • 30.4k
5 votes
1 answer
179 views
+200

How do we know that comets definitely mase and not just fluoresce? What is it about 18-cm lines that indicates that is really masing per se?

uhoh
  • 30.4k
2 votes
0 answers
10 views

Calculate the uncertainty in measured flux density from an integrated intensity map

lucas
  • 1,259
1 vote
1 answer
97 views

Rayleighs units conversion

CommunityBot
  • 1
1 vote
0 answers
28 views
+100

Recommendation for green laser pointer for 6" Orion SkyQuest; one integrated with finder or a separate laser added to current configuration?

uhoh
  • 30.4k
1 vote
0 answers
43 views

How to find a direction given the sunset

user996159
  • 119
2 votes
1 answer
88 views

Can the JWST track element abundances throughout time? Would this be of any interest at all?

Agerhell
  • 407
2 votes
2 answers
64 views

software library that calculates earth/moon/sun/planets positions based on the geocentric model

Klaus Rohe
  • 141
1 vote
2 answers
68 views

Which mobile/computer application can help me understand celestial coordinate systems better?

Klaus Rohe
  • 141
9 votes
2 answers
2k views

How would ocean tides work on a tidally-locked planet?

Loren Pechtel
  • 301
2 votes
0 answers
26 views

tool to calculate moonrise/moonset and moon phase for any date for any location

Bob
  • 183
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