Astronomy

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Answer a question with score of 1 or more.
Awarded 2136 times.
The Lambda-CDM-model: when will the Age of the universe catch up with the Hubble time?
Awarded yesterday
Downloadable GCNS (Gaia Catalog of Nearby Stars)
Awarded yesterday
how much advanced notice would we have for an Earth bound coronal mass ejection?
Awarded Jan 15 at 0:57
Examples of the oldest "precoveries"; objects that were first discovered in recent data but then looking back are confirmed in much older data
Awarded Jan 12 at 10:06
Which JWST instrument modes are compatible with observations of the bright trans-Earth planets Mars, Jupiter, and Saturn? Which aren't?
Awarded Jan 11 at 4:57
When will 2002 MS4 be named?
Awarded Jan 10 at 22:03
Finding stellar radii
Awarded Jan 9 at 16:10
What is the maximum latitude from which a satellite in a geostationary orbit around Saturn would be visible to an observer on the planet?
Awarded Jan 3 at 20:55
(post deleted or otherwise unavailable)
Awarded Jan 3 at 6:04
Why was it so difficult to figure out the form of the Milky Way?
Awarded Jan 3 at 0:21
How can I reconcile the JWST journey time of thirty days to Lagrange L2 with simple orbital mechanics?
Awarded Jan 3 at 0:11
What are the stars/constellations a beginner/enthusiast can easily identify?
Awarded Jan 2 at 12:07
Tips of Crescent
Awarded Jan 1 at 20:40
Can I use an achromatic focal reducer to reduce chromatic aberration?
Awarded Dec 30 '21 at 1:05
What are "p" and "r" wrt the moon?
Awarded Dec 27 '21 at 22:35
Why does a timelapse video of a stationary Milky Way make the horizon appear to move from horizontal to vertical?
Awarded Dec 25 '21 at 21:55
How do you call it when two celestial bodies come as close to each other as they will in their current orbits?
Awarded Dec 24 '21 at 23:01
Sunset and sunrise formulas adopted by IAU
Awarded Dec 24 '21 at 23:01
Could Mercury be the creator of Earth's Moon?
Awarded Dec 18 '21 at 7:11
Which one is better for both the beginner dad and the 7-yr old? Sky-Watcher 130P or Celestron StarSense Explorer 114AZ
Awarded Dec 16 '21 at 18:47
Minimum telescope needed to see the rings of the Saturn
Awarded Dec 14 '21 at 20:42
Why would it be very light out at 3 AM?
Awarded Dec 13 '21 at 10:16
Why do satellites appear as streaks in telescope images?
Awarded Dec 12 '21 at 22:55
Does dark energy make galaxies expand over long periods of time?
Awarded Dec 12 '21 at 12:56
How to fix James Webb space telescope?
Awarded Dec 11 '21 at 21:55
Why temperature of dark side of moon is not 3 Kelvin
Awarded Dec 9 '21 at 20:17
Semimajor axes data from Kepler Eclipsing Binary Catalog
Awarded Dec 8 '21 at 23:10
Is the boulder on the peak of Tycho Crater the core of the impactor, or is it a random rock?
Awarded Dec 8 '21 at 17:41
Looking for star database
Awarded Dec 7 '21 at 6:16
How was the speed of the Sun (around the Milky Way Galaxy) calculated?
Awarded Dec 4 '21 at 21:45
How does NASA figure out orbital period and mass data for planets and other celestial bodies?
Awarded Dec 3 '21 at 13:40
Why is the Emissivity of emission lines in unit erg.s-1.cm3?
Awarded Dec 1 '21 at 15:26
Are the planets Mercury, Saturn, Uranus and Neptune losing mass?
Awarded Nov 30 '21 at 22:52
Orbital mean motion expression derivation
Awarded Nov 30 '21 at 11:45
What should I look for in a first telescope for a child?
Awarded Nov 29 '21 at 18:18
New to Astrophotography
Awarded Nov 29 '21 at 6:35
Do mixed type remnant collisions produce anything interesting?
Awarded Nov 26 '21 at 19:20
Was lunar libration first observed or first predicted? In either case, who was the responsible party?
Awarded Nov 24 '21 at 19:57
Why can't Level replace Horizon when using a Sextant
Awarded Nov 23 '21 at 18:28
Where is it possible to observe the Moon for 24 hours?
Awarded Nov 19 '21 at 6:50
Difference in Sunrise times between Horizons and NOAA
Awarded Nov 14 '21 at 10:10
Can stars really be seen after sunrise from Mount Everest?
Awarded Nov 11 '21 at 18:04
Is it possible for stars not to rotate?
Awarded Nov 5 '21 at 17:21
Why does light pollution make the night sky completely black without stars?
Awarded Nov 4 '21 at 21:15
TPoint software, INDAT command - Format 4 (ALTAZ)
Awarded Nov 4 '21 at 19:06
Is the closest planet to another planet always the innermost planet?
Awarded Nov 1 '21 at 11:11
Is saying that what we see of an object 1 light-year away happened 1 year "ago" in any a way useful view of the universe?
Awarded Oct 30 '21 at 19:33
Obtaining the Flux-Time plot for a Quasar
Awarded Oct 29 '21 at 16:36
Is saying that what we see of an object 1 light-year away happened 1 year "ago" in any a way useful view of the universe?
Awarded Oct 28 '21 at 17:09
Is saying that what we see of an object 1 light-year away happened 1 year "ago" in any a way useful view of the universe?
Awarded Oct 28 '21 at 17:02
What point does Earth actually orbit?
Awarded Oct 24 '21 at 23:03
Is the Moon only 60x60 pixels?
Awarded Oct 23 '21 at 0:06
(post deleted or otherwise unavailable)
Awarded Oct 21 '21 at 4:47
What time and where on earth is the latest solar noon?
Awarded Oct 20 '21 at 9:49
What time and where on earth is the latest solar noon?
Awarded Oct 19 '21 at 22:42
Logically, how can the universe be infinite in size?
Awarded Oct 19 '21 at 20:16
What's the modification of a parabolic trajectory when accounting for variation in gravity?
Awarded Oct 19 '21 at 18:04
Logically, how can the universe be infinite in size?
Awarded Oct 19 '21 at 5:33
(post deleted or otherwise unavailable)
Awarded Oct 18 '21 at 22:42
Are there any old/ancient star maps that we can compare to today’s and see drastic differences?
Awarded Oct 16 '21 at 19:50
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