User Bob516

14 votes

1 answer

550 views

At Mars' equator how long does twilight last?

mars twilight

asked Dec 20, 2019 at 13:39

9 votes

1 answer

121 views

How much is usually deposited in a Mars regional dust storm?

asked Dec 16, 2018 at 3:39

8 votes

1 answer

1k views

Why is Ganymede's aurora only visible in ultraviolet while Earth's is bright green and red?

hubble-telescope aurora electromagnetic-spectrum

asked Jan 14, 2020 at 15:04

7 votes

2 answers

231 views

Are meteors visible on Mars?

mars meteor naked-eye

asked Dec 18, 2019 at 14:47

7 votes

1 answer

145 views

Are any bow shocks seen in the visible spectrum?

bow-shock visible-light

asked Jun 7, 2019 at 13:26

7 votes

1 answer

142 views

Is the gravitational field of the sun uniform?

the-sun gravity orbital-mechanics parker-solar-probe

asked Jul 4, 2020 at 15:36

6 votes

2 answers

112 views

Closest stable orbit about the sun of an asteroid?

the-sun asteroids orbital-mechanics

asked Jul 20, 2020 at 20:12

6 votes

2 answers

262 views

When do radio and tv signals become indistinguishable from background noise of the universe?

radio-astronomy cosmic-microwave-background

asked Nov 14, 2019 at 15:31

5 votes

1 answer

268 views

Is the nose of the solar system and the solar apex the same thing?

solar-system

asked Dec 6, 2018 at 4:18

5 votes

1 answer

158 views

What does the Sun look like from the heliopause?

the-sun angular-diameter

asked Apr 14, 2019 at 1:14

5 votes

1 answer

145 views

Lightning in Jupiter's "string of pearls?"

jupiter

asked Dec 4, 2020 at 5:19

5 votes

1 answer

183 views

How much dimmer is a partial solar eclipse that goes from -26.71 to -25.89?

solar-eclipse apparent-magnitude

asked Mar 7, 2021 at 3:31

4 votes

1 answer

213 views

What inaccuracies are in this Stellarium depiction of the sky?

night-sky stellarium

asked Oct 17, 2020 at 14:54

4 votes

2 answers

115 views

Solar flares/CME dangers to life?

earth solar-flare coronal-mass-ejection

asked Jul 11, 2020 at 1:30

4 votes

1 answer

140 views

Would one have to be more than halfway to the Oort Cloud for the Sun to appear as bright as the full moon?

the-sun the-moon apparent-magnitude

asked Jan 3, 2019 at 5:48

4 votes

1 answer

281 views

Uranus' axis of rotation-when discovered?

rotation history uranus

asked Jul 28, 2019 at 22:28

4 votes

0 answers

106 views

What is the surface feature of the mesas in the Noctis Labyrinthus on Mars?

mars surface

asked Dec 24, 2019 at 23:26

3 votes

1 answer

263 views

Are Sun-Earth L1 & L2 points generally considered outside the Earth's Hill Sphere?

the-sun earth lagrange-point hill-sphere

asked Feb 16, 2020 at 20:36

3 votes

1 answer

89 views

Is there a reason two interstellar objects were found in the solar system in such a short period of time?

observational-astronomy oumuamua

asked Dec 8, 2019 at 3:52

3 votes

0 answers

49 views

Would Martian sunrise/sunset look the same at the Thaumasia Plateau as the rovers' photographs?

mars naked-eye sunrise

asked Dec 18, 2019 at 19:21

3 votes

0 answers

92 views

What is the apparent magnitude of the faintest stars visible during a full moon?

the-moon apparent-magnitude naked-eye

asked Sep 25, 2019 at 21:55

3 votes

1 answer

1k views

Word for blue ring around the Earth

earth terminology

asked May 22, 2019 at 14:38

3 votes

1 answer

201 views

Trans-Neptunian Dwarf Planet near Heliopause

dwarf-planets trans-neptunian-object

asked May 29, 2019 at 0:32

3 votes

1 answer

261 views

Could Ganymede's aurora be seen with the naked eye?

hubble-telescope naked-eye aurora

asked Jan 6, 2019 at 23:30

3 votes

1 answer

204 views

Orientation of local star map

milky-way ecliptic star-maps

asked Jun 24, 2020 at 18:45

3 votes

0 answers

56 views

Density of a sunspot compared to the surrounding photosphere?

density sunspots photosphere

asked Jul 21, 2020 at 22:36

2 votes

1 answer

94 views

Which solar system objects have the least stable solar orbits?

orbit asteroids near-earth-object trojan-asteroids centaur

asked Jul 3, 2020 at 19:49

2 votes

1 answer

201 views

How wide is the Moon's umbra and penumbra at EM-L2?

asked Apr 16, 2019 at 16:10

2 votes

1 answer

157 views

How long would an occultation by a TNO last?

the-sun occultation trans-neptunian-object

asked May 1, 2019 at 12:50

2 votes

2 answers

123 views

Would the solar corona be visible from the distance of the outer planets?

the-sun naked-eye corona outer-solar-system

asked Jan 4, 2019 at 20:37

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46 Questions

At Mars' equator how long does twilight last?

How much is usually deposited in a Mars regional dust storm?

Why is Ganymede's aurora only visible in ultraviolet while Earth's is bright green and red?

Are meteors visible on Mars?

Are any bow shocks seen in the visible spectrum?

Is the gravitational field of the sun uniform?

Closest stable orbit about the sun of an asteroid?

When do radio and tv signals become indistinguishable from background noise of the universe?

Is the nose of the solar system and the solar apex the same thing?

What does the Sun look like from the heliopause?

Lightning in Jupiter's "string of pearls?"

How much dimmer is a partial solar eclipse that goes from -26.71 to -25.89?

What inaccuracies are in this Stellarium depiction of the sky?

Solar flares/CME dangers to life?

Would one have to be more than halfway to the Oort Cloud for the Sun to appear as bright as the full moon?

Uranus' axis of rotation-when discovered?

What is the surface feature of the mesas in the Noctis Labyrinthus on Mars?

Are Sun-Earth L1 & L2 points generally considered outside the Earth's Hill Sphere?

Is there a reason two interstellar objects were found in the solar system in such a short period of time?

Would Martian sunrise/sunset look the same at the Thaumasia Plateau as the rovers' photographs?

What is the apparent magnitude of the faintest stars visible during a full moon?

Word for blue ring around the Earth

Trans-Neptunian Dwarf Planet near Heliopause

Could Ganymede's aurora be seen with the naked eye?

Orientation of local star map

Density of a sunspot compared to the surrounding photosphere?

Which solar system objects have the least stable solar orbits?

How wide is the Moon's umbra and penumbra at EM-L2?

How long would an occultation by a TNO last?

Would the solar corona be visible from the distance of the outer planets?