Bob516's user avatar
Bob516's user avatar
Bob516's user avatar
Bob516
  • Member for 5 years, 2 months
  • Last seen more than a month ago
  • Near NYC
14 votes
1 answer
579 views

At Mars' equator how long does twilight last?

10 votes
1 answer
2k views

Where is the barycenter of the Milky Way Galaxy?

9 votes
1 answer
1k views

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

9 votes
1 answer
135 views

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

7 votes
1 answer
170 views

Are any bow shocks seen in the visible spectrum?

7 votes
2 answers
234 views

Are meteors visible on Mars?

7 votes
1 answer
193 views

Is the gravitational field of the sun uniform?

6 votes
2 answers
176 views

Closest stable orbit about the sun of an asteroid?

6 votes
2 answers
729 views

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

5 votes
0 answers
136 views

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

5 votes
1 answer
229 views

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

5 votes
1 answer
158 views

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

5 votes
1 answer
326 views

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

5 votes
1 answer
234 views

What does the Sun look like from the heliopause?

5 votes
1 answer
409 views

What inaccuracies are in this Stellarium depiction of the sky?

5 votes
1 answer
151 views

Lightning in Jupiter's "string of pearls?"

5 votes
1 answer
273 views

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

4 votes
2 answers
169 views

Solar flares/CME dangers to life?

4 votes
1 answer
504 views

Uranus' axis of rotation-when discovered?

3 votes
1 answer
2k views

Word for blue ring around the Earth

3 votes
1 answer
215 views

Trans-Neptunian Dwarf Planet near Heliopause

3 votes
1 answer
313 views

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

3 votes
1 answer
397 views

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

3 votes
1 answer
93 views

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

3 votes
0 answers
60 views

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

3 votes
1 answer
724 views

Orientation of local star map

3 votes
0 answers
121 views

Density of a sunspot compared to the surrounding photosphere?

2 votes
1 answer
110 views

Which solar system objects have the least stable solar orbits?

2 votes
0 answers
35 views

Is there any way to determine when the brightness of twilight is equal to the brightness of the full moon?

2 votes
1 answer
176 views

How can I find the depth of a portion of the Valles Marineris?