Search found 32 matches
- Wed Jun 29, 2016 9:15 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Juno Mission Trailer (2016 Jun 28)
- Replies: 28
- Views: 9443
Re: APOD: Juno Mission Trailer (2016 Jun 28)
Not to scare the crap out of everyone but some life forms seem very capable to survival. We're talking about extreme heating from reentry, and turning things into blobs of plasma. "You wouldn't really die of anything, in the traditional sense. You would just stop being biology and start being ...
- Mon Jun 27, 2016 7:36 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Anticrepuscular Rays over Colorado (II) (2016 Jun 27)
- Replies: 21
- Views: 4152
Re: APOD: Anticrepuscular Rays over Colorado (II) (2016 Jun 27)
Did you notice the shaded side of the fence posts on the left side of the scene show the sun at your back and to the left while the fence posts on the right side of the scene show the sun at your back and to the right!! As would be expected. All shadows will appear to converge at an invisible point...
- Fri Feb 12, 2016 6:38 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Two Black Holes Merge (2016 Feb 12)
- Replies: 67
- Views: 14377
Re: APOD: Two Black Holes Merge (2016 Feb 12)
I thought this was a repeat of last year's black hole merger, but it is slightly different.
For comparison:
http://apod.nasa.gov/apod/ap151020.html
http://asterisk.apod.com/viewtopic.php?t=35274
For comparison:
http://apod.nasa.gov/apod/ap151020.html
http://asterisk.apod.com/viewtopic.php?t=35274
- Mon Jan 04, 2016 10:10 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Falcon 9 First Stage Landing (2015 Dec 28)
- Replies: 39
- Views: 6046
Re: APOD: Falcon 9 First Stage Landing (2015 Dec 28)
I think it is quite fair to say the *option* to hover is quite desirable, since it allows you to correct for quite a lot of undesirable situations. (Low velocity at any altitude becomes survivable) Needing to use it, however would not be good, but that's how safety margin works and at least it doesn...
- Mon Jan 04, 2016 7:14 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Falcon 9 First Stage Landing (2015 Dec 28)
- Replies: 39
- Views: 6046
Re: APOD: Falcon 9 First Stage Landing (2015 Dec 28)
If the engine were able to throttle down to get anywhere near "just counteract gravity", then the landing would be MUCH easier, since the rocket could hover until it got things right (or ran out of fuel). Instead what happens is the rocket comes screaming down at a high speed, and the engi...
- Tue Dec 08, 2015 6:22 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Phobos: Doomed Moon of Mars (2015 Nov 22)
- Replies: 35
- Views: 6155
Re: APOD: Phobos: Doomed Moon of Mars (2015 Nov 22)
Since there is some confusion on the first page about tidal forces dragging in vs pushing out: You have a moon in orbit, and a planet below rotating. In a lower orbit the moon will travel around the planet faster, and in a higher orbit the moon will travel around the planet slower. In the middle, yo...
- Wed Oct 21, 2015 6:59 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: When Black Holes Collide (2015 Oct 20)
- Replies: 74
- Views: 8378
Re: APOD: When Black Holes Collide (2015 Oct 20)
What I found rather interesting were the stages that the smaller black hole went through in it's death spiral. At a couple points it seemed to temporarily split into two separate black holes. Trying to mind experiment this but I am falling short of the manifestation of a third gravity well. :shock:...