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Eric Jensen's user avatar
Eric Jensen's user avatar
Eric Jensen's user avatar
Eric Jensen
  • Member for 4 years, 1 month
  • Last seen more than a month ago
  • Swarthmore, PA
48 votes
Accepted

Why don't the inner moons of Jupiter have tidally-induced volcanism?

45 votes

How does the earth cast straight and reversed shadows on the moon?

25 votes

Was this an astronomical phenomenon observed in 1689?

19 votes

Is the universe macroscopically transparent to CMB? Is the fraction intercepted by stars and dust so tiny that it doesn't have a correction factor?

12 votes
Accepted

Blue color of ion (plasma) comet tails

9 votes
Accepted

The physical processes of emission lines in cosmic nebula

9 votes

Why are the time zones calculated as 360°/24 and not 361°/24 or 360°/23.933?

9 votes

How did Astronomers mostly(?) agree to publish arXiv preprints along with peer-reviewed Journals? Was there pushback?

8 votes
Accepted

Why does the background noise in this image of 2020 QG look like corduroy?

8 votes

As the Moon and the Earth are predicted to get into tidal lock, how slow would the Earth rotate?

8 votes
Accepted

How do astronomers detect the 'metals' in a star? If the atoms are presumably completely ionized?

7 votes

Which stellar properties can we describe as "first principles" in which we can derive the rest?

7 votes
Accepted

What's the critical mass of a rocky planet before its gravity traps enough gas in its atmosphere to start becoming a gassy planet

7 votes

Accessing SDSS server SQL server via python

7 votes

Why isn't most hydrogen in the universe molecular (diatomic), instead of atomic (monoatomic)?

7 votes
Accepted

Does Oxygen-burning process produce Neon?

7 votes
Accepted

Did Cassini return a photo of Saturn's rings shown from closer to Saturn?

6 votes
Accepted

Has a gravitational microlensing event ever been predicted? If so, has it been observed?

6 votes
Accepted

Do stars have "radio photospheres"? Are they different from their optical photospheres?

6 votes
Accepted

Was the "green star" event in NGC 3314 ever figured out or named?

5 votes

Different times of sunset at the same location due to elevation

5 votes

Why does Earth have a dip in the CO2 absortion spectrum from 14 to 16 micron?

5 votes
Accepted

What is the significance of using baseline pairs in radio interferometry?

4 votes
Accepted

What is the significance of the velocity resolution in spectral line observations using radio interferometry?

4 votes

Sample bias' contribution to "Planet 9" hypothesis, why was this not thoroughly addressed before?

4 votes

How many times has the Milky Way rotated?

4 votes

How can the Earth and the Moon be in synchronous rotation if the Moon won't be in geostationary orbit?

4 votes
Accepted

Astronomical data convertion from Jy/pixel to MJy/sr?

3 votes
Accepted

on/off filter and their photometric calibration

3 votes
Accepted

Galactic winds/outflows: why and how are they detected via blueshifted absorption lines in spectra?