Astronomy Beta

Popular Question

 Popular Question
Question with 1,000 views. This badge can be awarded multiple times.
Awarded 1574 times.
Solar / lunar positions in ECEF using SOFA C libraries
Awarded 3 hours ago
Why are main sequence stars more massive than the Sun less dense? e.g. Vega, Spica etc
Awarded 5 hours ago
Flux density to flux
Awarded 10 hours ago
Do we see planet venus everyday?
Awarded yesterday
How was the mass of Venus determined?
Awarded 2 days ago
How do scientists know that distant parts of the universe obey the physical laws exactly as we observe around us?
Awarded 2 days ago
Orbital Period of an Asteroid
Awarded 2 days ago
Calculate Earth's distance travelled in a year
Awarded 2 days ago
Collimating with a home-made collimation cap
Awarded 2 days ago
Why are the time zones calculated as 360°/24 and not 361°/24 or 360°/23.933?
Awarded Sep 27 at 18:48
Is the Celestron astromaster 130 EQ Model able to see nebulas and galaxies?
Awarded Sep 27 at 7:22
On the Equator, why are the shortest shadows seen at 11:32, and not at Noon?
Awarded Sep 27 at 7:22
What magnification is required to see detail on Mars / other local bodies?
Awarded Sep 26 at 10:35
How long until the Earth and Moon become a binary planet?
Awarded Sep 24 at 17:35
How is it possible that we haven't discovered anything in the Oort cloud yet?
Awarded Sep 24 at 8:35
On the cosmological principle
Awarded Sep 24 at 6:40
Is there a name for a planet and its moons/satellites?
Awarded Sep 22 at 11:56
Was the Geocentric Model correct at all?
Awarded Sep 17 at 5:57
How long between the moment a meteor is first visible and the moment a meteorite hits the ground?
Awarded Sep 16 at 9:26
How does light affect the universe?
Awarded Sep 16 at 8:37
How did Eratosthenes know that the sun is far away?
Awarded Sep 15 at 14:15
How are galaxies moving so much and why are they moving? [closed]
Awarded Sep 15 at 14:03
How is it possible that Saturn's gravitational acceleration felt by Mimas is stronger than Mimas' own surface gravity?
Awarded Sep 15 at 13:27
Why do stars seem not to move relative to each other?
Awarded Sep 15 at 8:47
Can two heavy objects circling around their C.M. be separated because of the speed of gravity?
Awarded Sep 14 at 13:00
Did I see a supernova explosion?
Awarded Sep 12 at 19:03
When did scientists discover that the Sun has a life cycle and that it is going to die?
Awarded Sep 12 at 16:27
When was the martian dichotomy first observed?
Awarded Sep 10 at 16:52
What factors influence the Widmanstätten pattern in iron meteorites?
Awarded Sep 9 at 19:11
How does an eclipse differ from an occultation?
Awarded Sep 8 at 4:56
Why does the Moon seem larger when it is close to the horizon? [duplicate]
Awarded Sep 7 at 15:32
Finding the temperature of Earth from temperature of Mars and its distance from Sun
Awarded Sep 7 at 2:25
What are Flamsteed numbers?
Awarded Sep 6 at 23:26
What's the theoretical maximum density of a galaxy?
Awarded Sep 6 at 14:49
How many of the whole zodiac constellations can be seen in one single night?
Awarded Sep 5 at 21:48
How is the Universe's Expansion Accelerating if the Hubble Constant is Decreasing?
Awarded Sep 5 at 13:35
Farthest Orbit around the Earth? [duplicate]
Awarded Sep 1 at 18:47
How do satellites impede current telescopes?
Awarded Sep 1 at 8:06
What does “negligible mass” mean in the formulation of geodesics equation?
Awarded Aug 31 at 19:55
Why do I see rainbows around the moon?
Awarded Aug 31 at 4:25
Calculate Local Sidereal Time
Awarded Aug 30 at 13:51
Looking for a detailed Milky Way map?
Awarded Aug 30 at 3:06
How did New Horizons take such well-lit pictures of Pluto?
Awarded Aug 28 at 3:03
Why aren't planet orbits circular? [duplicate]
Awarded Aug 22 at 2:27
Can the Sun be used as a point source of light to achive better focus?
Awarded Aug 21 at 5:41
Why can't gravity repel things?
Awarded Aug 18 at 16:08
Why are there no gamma-ray bursts detected in our galaxy?
Awarded Aug 18 at 13:15
Are there stars with an average density greater than the central density?
Awarded Aug 17 at 20:35
Why does earth not collide with the sun? [duplicate]
Awarded Aug 17 at 19:37
Second Telescope: Maksutov Cassegrain vs Refractor
Awarded Aug 17 at 19:15
If Sunlike stars become a red giant and eventually a white dwarf, what do red dwarfs become?
Awarded Aug 16 at 12:16
Does Polaris have a trail in the sky timelapse?
Awarded Aug 14 at 20:04
What color is a red dwarf star?
Awarded Aug 12 at 2:12
How much does the sky change in a few thousand years?
Awarded Aug 11 at 9:47
Shouldn't tidal locking be impossible for a satellite that has a considerably eccentric orbit?
Awarded Aug 10 at 13:26
Where is the Perseids meteor shower coming from?
Awarded Aug 10 at 12:40
Why can't we see Saturn's phases from earth?
Awarded Aug 10 at 10:56
Minimum telescope needed to see the rings of the Saturn
Awarded Aug 7 at 2:47
How to calculate the ground track of the Moon's position on the Earth's surface?
Awarded Aug 6 at 6:32
Can we change Earth's orbit with modern technology? [closed]
Awarded Aug 5 at 23:55
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