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0 votes
1 answer
25 views

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

0 votes
0 answers
7 views

What would a kilonova look like "up close"?

0 votes
2 answers
47 views

Is the Vernal Point a fixed point on the sky?

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?

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?

2 votes
0 answers
10 views

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

1 vote
1 answer
97 views

Rayleighs units conversion

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?

1 vote
0 answers
43 views

How to find a direction given the sunset

2 votes
1 answer
88 views

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

2 votes
2 answers
64 views

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

1 vote
2 answers
68 views

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

9 votes
2 answers
2k views

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

2 votes
0 answers
26 views

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

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