Skip to main content
Astronomy

Notable Question

 Notable Question
Question with 2,500 views. This badge can be awarded multiple times.
Awarded 1622 times.
Will Saturn's rings become a moon?
Awarded 20 hours ago
Why is Uranus colder than Neptune?
Awarded Jul 2 at 7:50
What is the connection between declination and latitude?
Awarded Jul 1 at 8:32
Why is the sunset at different times at the same longitude at equinox?
Awarded Jun 30 at 23:36
Does a measuring stick with a size of a billion lightyears in intergalactic space keep the same length in expanding space?
Awarded Jun 30 at 18:05
Why do planets and satellites in the Solar system look so wildly different if they came from more or less the same matter?
Awarded Jun 30 at 16:56
Struggling to understand the phases of the moon
Awarded Jun 29 at 18:26
Relationship between metallicity and color? Should Pop. I stars be blue?
Awarded Jun 27 at 20:01
Are there really half-a billion visible supernovae exploding all the time?
Awarded Jun 26 at 2:10
What is it exactly about these flares of infrared light from Sgr A* that "confirms" it is a supermassive black hole?
Awarded Jun 21 at 3:26
Why don't they put more spare gyroscopes in expensive space telescopes?
Awarded Jun 20 at 8:04
Why does this large Newtonian telescope's front cover have two or three holes in it?
Awarded Jun 16 at 21:45
Are red moons possible without eclipses or smoke from fires?
Awarded Jun 15 at 6:57
Why does Mars have a jagged light curve?
Awarded Jun 12 at 9:05
Is it theoretically possible for the Sun to go dark?
Awarded Jun 10 at 21:05
Color of planets
Awarded Jun 9 at 9:56
Why do zodiac constellations not look like their names?
Awarded Jun 8 at 23:25
Can we see the south Pole of the Moon standing on North Pole of the Earth
Awarded Jun 6 at 9:35
Are stars really "burning balls of gas"?
Awarded Jun 4 at 15:08
Explain to a 4-year old why people below the equator are not tilted or suspended upside down
Awarded Jun 4 at 10:34
Visibility of Planetary alignment of 6 planets on 3 June 2024 from Prague
Awarded Jun 3 at 13:15
Why are there different time estimates for a solar photon to reach the surface of the Sun?
Awarded May 31 at 6:56
Can a crater form inside another crater
Awarded May 28 at 18:04
Need help identifying fast moving red dot in the sky
Awarded May 25 at 11:56
Size and Mass of a typical "small" asteroid that impacts the Earth?
Awarded May 25 at 3:56
Telescope on drones to escape light pollution?
Awarded May 24 at 8:41
How close will Pluto come to Earth this year (2024)?
Awarded May 24 at 6:57
Comoving Volume Calculation
Awarded May 22 at 8:11
How to plot celestial equator in galactic coordinates? Why does my plot appear "backwards"? [duplicate]
Awarded May 20 at 17:35
Why different specifications for telescopes and binoculars?
Awarded May 20 at 10:18
How is the star 'Spica' pronounced?
Awarded May 19 at 22:20
Formation of elements in the Sun other than helium
Awarded May 19 at 20:41
Our galaxy, the Milky Way, forms part of a galaxy group called The Local Group. What are the parameters that dictate what a galaxy group is?
Awarded May 18 at 18:50
Black hole density
Awarded May 17 at 20:51
What would happen if a Black Hole and White Hole Collided?
Awarded May 15 at 22:58
"Official" time for other planets
Awarded May 13 at 18:05
Is possible to identify the Lagrange L2 point in the sky from the earth?
Awarded May 13 at 11:42
Are there other life giving sources of energy in space apart from stars (like nebulae, radiation, etc.)?
Awarded May 12 at 13:03
Are we sure solar cycle is not related to the orbit of Jupiter?
Awarded May 10 at 14:26
Is it possible that the Sun and all the nearby stars formed from the same nebula?
Awarded May 9 at 19:15
Daylight hours on Titan?
Awarded May 4 at 19:26
The size of the radius of the event horizon of a black hole created by the merger of a black hole binary system
Awarded May 4 at 9:26
Why do our clocks not go out of sync with the day over a year?
Awarded May 3 at 4:55
Is there a formula for absolute magnitude that does not contain an apparent magnitude term?
Awarded May 2 at 5:06
How scientists find the direction of rotation of planets?
Awarded Apr 29 at 18:42
How did the ancient cultures determine that the year was actually a fraction of an extra day beyond 365 days?
Awarded Apr 29 at 15:10
Gravitational red shift vs Doppler redshift: Is the universe really expanding?
Awarded Apr 29 at 4:49
How can I convert a GAIA-magnitude "G" to Johnson "V"?
Awarded Apr 27 at 20:25
Why do massive stars not undergo a helium flash
Awarded Apr 26 at 11:41
What effects do other planets have on the solar system?
Awarded Apr 26 at 8:07
Why does the Moon seem larger when it is close to the horizon? [duplicate]
Awarded Apr 26 at 3:32
Worthwhile to put a telescope on the far side of the Sun?
Awarded Apr 23 at 8:16
If a black hole was headed for our solar system and would arrive within a year, would we necessarily know of it?
Awarded Apr 22 at 5:41
What would happen if a planet is removed from the solar system? [closed]
Awarded Apr 21 at 15:12
Why isn't most hydrogen in the universe molecular (diatomic), instead of atomic (monoatomic)?
Awarded Apr 20 at 14:33
Why is there a year 1 B.C., a year 0, and a year 1 A.D. in NASA’s Five Millennium Canon of Solar Eclipses?
Awarded Apr 16 at 1:35
How to calculate the altitude of a star given the hour angle, declination, and latitude?
Awarded Apr 15 at 21:10
A vertical stick's shadow at solar noon should be straight north/south, right?
Awarded Apr 11 at 22:16
How precise are future Solar eclipse timing, path and dates, what could change timing/path?
Awarded Apr 11 at 19:22
At 45°N, how come the Sun rises in a northeasterly direction?
Awarded Apr 11 at 15:11
1
2 3 4 5
…
28