Reputation
1,036
Top tag
Next privilege 1,250 Rep.
Create tag synonyms
Badges
4 10
Newest
 Custodian
Impact
~9k people reached

  • 0 posts edited
  • 0 helpful flags
  • 22 votes cast
2d
comment Why do meteorites explode?
@rob: Imagine you travel on the comet. Then you are in its rest-frame. From this perspective an explosion would generate motion in all directions equally. This needs an energy source. However a break-up is just the comet loosing its structural support and then relatively gently falling to pieces.
2d
comment Why do meteorites explode?
@SF: The meteor still hits pretty fast. That should account for all the damage.
Apr
29
answered Why do meteorites explode?
Apr
19
reviewed Reject How to calculate a planet's apparent size when the planet is viewed from a moon in orbit around it?
Apr
14
awarded  Custodian
Apr
14
reviewed Approve In rocky planets,does fast rotation cause flatting or low flatting imply slow rotation?
Apr
8
comment VLT interferometry vs E-ELT?
@DanielTate: Sorry I've misread your question in a hurry. I think the two answers below are spot-on.
Apr
8
comment VLT interferometry vs E-ELT?
Resolution is wavelength over telescope size.
Apr
7
revised Far side of the moon question
omitted omega in the last formula, added \approx
Apr
7
answered Far side of the moon question
Apr
1
answered What is it that distinguishes one atmospheric layer from another?
Mar
30
answered Recommendation for learning about stellar astrophysics
Mar
29
awarded  Good Answer
Mar
28
awarded  Enlightened
Mar
28
awarded  Nice Answer
Mar
27
revised Did I see another planet?
it takes 2 1/2 hours for Io to traverse behind Jupiter at the time of its strongest proper motion
Mar
27
comment Did I see another planet?
@LocalFluff: Wouldn't bet my eye on it if the moons differ in sharpness... But I'd say it could be related to the contrast, which decreases for the moon closer in. That should wash out dimmer features and thus make it appear sharper. So in that sense I'd speculate on a real, measurable effect.
Mar
27
answered Did I see another planet?
Mar
27
comment Did I see another planet?
That should be Jupiter and his 4 Galilean moons. However on your picture 2 of them seem missing, maybe they were cut-off by the field-of-view.
Mar
10
awarded  Yearling