Astronomy

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 Popular Question
Question with 1,000 views. This badge can be awarded multiple times.
Awarded 2143 times.
How would water-ammonia oceans behave?
Awarded 4 hours ago
Can a planet with no atmosphere be orbited at extremely low altitudes?
Awarded 13 hours ago
Will 3,600ft asteroid be visible at my location tonight?
Awarded 23 hours ago
DIY tracking motor - gear mating
Awarded yesterday
Betelgeuse appears in a rainbow of colors through a Newtonian telescope
Awarded 2 days ago
14,000 square degrees
Awarded 2 days ago
Why do zodiac constellations not look like their names?
Awarded Jan 16 at 0:20
How would the sky look if Earth orbited a red giant at a safe distance?
Awarded Jan 15 at 14:01
Why was the Cosmic Microwave Background (CMB) released at a blackbody temperature of 3000K rather than 30,000K?
Awarded Jan 14 at 9:26
Why is there so much methane in space?
Awarded Jan 13 at 23:25
What ground-based observational evidence is there that the Moon doesn't have an atmosphere?
Awarded Jan 13 at 13:40
What does it mean for a proto-neutron star to be opaque to neutrinos?
Awarded Jan 13 at 7:05
If Betelgeuse is exploding in 2022, why would we see the explosion in 2022?
Awarded Jan 13 at 6:18
How would one calculate the synodic period between 3 planets?
Awarded Jan 10 at 20:42
How near to Earth do comets pass?
Awarded Jan 10 at 7:20
Trouble Seeing Distant Planets Such as Jupiter and Uranus
Awarded Jan 9 at 6:55
Which eyepiece should I use to view planets with a Slokey Skyways 50080 telescope?
Awarded Jan 9 at 6:55
Sunsets: Mars/Earth
Awarded Jan 4 at 18:05
Are the viewable nebulae only in our galaxy?
Awarded Jan 3 at 16:02
76mm reflector vs 70mm refractor? Both are at sale at $200
Awarded Jan 1 at 21:10
Why do telescopes use hexagonal mirror pieces instead of pie slice shaped ones?
Awarded Jan 1 at 15:57
Is possible to identify the Lagrange L2 point in the sky from the earth?
Awarded Dec 31 '21 at 7:02
Will the James Webb Space Telescope be visible from earth?
Awarded Dec 28 '21 at 3:40
Is the science in "Don't Look Up" realistic?
Awarded Dec 27 '21 at 14:51
Why does a timelapse video of a stationary Milky Way make the horizon appear to move from horizontal to vertical?
Awarded Dec 26 '21 at 11:11
From our world's perspective, does the full moon look larger in one city than it does in another?
Awarded Dec 26 '21 at 5:17
Can a star undergo helium fusion after depleting all its hydrogen?
Awarded Dec 21 '21 at 8:51
What are the exact causes that differences in sunrises are shorter around june and december but long in march and september?
Awarded Dec 21 '21 at 8:32
How to correct observed flux densities for redshift
Awarded Dec 20 '21 at 21:26
Do all orbiting bodies eventually collide?
Awarded Dec 20 '21 at 15:26
Could Planet X have a perihelion much closer than 300 AU and still be responsible for the gravitational interaction with 19 TNOs?
Awarded Dec 20 '21 at 7:30
Hohmann transfer orbit (Earth-Jupiter system)
Awarded Dec 18 '21 at 11:27
Earth's magnetic field vs. refrigerator magnet
Awarded Dec 16 '21 at 19:25
Does anyone know why three of Jupiter's largest moons orbit in 1:2:4 resonance?
Awarded Dec 16 '21 at 14:33
Why do satellites appear as streaks in telescope images?
Awarded Dec 12 '21 at 19:51
What rotational speed would Mercury need to have to achieve a temperature comfortable for humans
Awarded Dec 11 '21 at 23:26
Parking a telescope at a Lagrange point: is this a good idea from a debris point of view?
Awarded Dec 11 '21 at 5:10
Could asteroid mining affect gravitational balance?
Awarded Dec 10 '21 at 23:49
Where in space would the Earth and Moon appear to be the same size?
Awarded Dec 9 '21 at 11:26
Repetition of orbital structure on many scales - what is it called?
Awarded Dec 7 '21 at 22:40
Why do the planets in the Solar system stay in the same orbital plane?
Awarded Dec 4 '21 at 18:21
How does NASA figure out orbital period and mass data for planets and other celestial bodies?
Awarded Dec 3 '21 at 23:11
How do I get flux density when I have mJy/beam , beam size and pixel size in an astronomical image
Awarded Dec 3 '21 at 14:05
How can tidal heating lower Io's orbit?
Awarded Dec 2 '21 at 16:36
How can Io be tidally heated while it is in tidal lock?
Awarded Dec 2 '21 at 14:21
Are objects in the universe moving away from each other at the same acceleration?
Awarded Dec 2 '21 at 14:09
How to visually tell the difference between a planetary nebula and a supernova remnant?
Awarded Dec 1 '21 at 21:51
Is it possible to predict a supernova with years or decades of advanced notice?
Awarded Nov 30 '21 at 2:21
What should I look for in a first telescope for a child?
Awarded Nov 29 '21 at 21:33
Can the gravitational redshift of our sun be measured?
Awarded Nov 29 '21 at 14:52
Could someone explain what is wrong with my telescope, and what should I be able to see with it?
Awarded Nov 29 '21 at 5:48
Is it practical to build a giant telescope in Moon? (Considering the fact that the atmosphere of moon is very rare)
Awarded Nov 27 '21 at 22:51
How many stars are between Milky way and Andromeda?
Awarded Nov 27 '21 at 1:36
Edu-Science telescope
Awarded Nov 27 '21 at 0:30
Was lunar libration first observed or first predicted? In either case, who was the responsible party?
Awarded Nov 25 '21 at 23:26
Mass of sun's core
Awarded Nov 24 '21 at 16:27
What happens to a white dwarf past the Chandrasekhar limit?
Awarded Nov 22 '21 at 1:56
Where is it possible to observe the Moon for 24 hours?
Awarded Nov 19 '21 at 20:48
Does the earth spiral around the sun's movement/motion path?
Awarded Nov 19 '21 at 15:25
Do planets orbit the sun in ellipses because of sun movement vector?
Awarded Nov 19 '21 at 7:01
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