tkdguy Posted May 21, 2013 Author Report Share Posted May 21, 2013 The Mote in Sauron's Eye Quote Link to comment Share on other sites More sharing options...
Old Man Posted May 22, 2013 Report Share Posted May 22, 2013 Meteor strike on the moonI can take it. Quote Link to comment Share on other sites More sharing options...
Cancer Posted May 22, 2013 Report Share Posted May 22, 2013 Meteor strike on the moonI quoted that "5 kilotons equivalent" number from that other site, but the numbers don't match up. 40 kg at 25 km/s gives you 1.25e+10 J of energy, which is more like a few tons equivalent, not kilotons. Somebody slipped a factor of 10^3 (or read the wrong entry in the Wikipedia table). I was late in my lecture prep Monday morning for my earlier comment, or I should have caught that at the time. Quote Link to comment Share on other sites More sharing options...
tkdguy Posted May 22, 2013 Author Report Share Posted May 22, 2013 Investigation of asteroid crash on moon - live webcast May 22 Best pit stop to Mars: Moon or asteroid? Rare view of ancient galaxies colliding Quote Link to comment Share on other sites More sharing options...
tkdguy Posted May 30, 2013 Author Report Share Posted May 30, 2013 Spitzer may hunt for Mars-sized planets around brown dwarfs Asteroid miners to launch first Crowdfunded space telescope Quote Link to comment Share on other sites More sharing options...
wcw43921 Posted May 30, 2013 Report Share Posted May 30, 2013 Link To Article Okay--it's only supposed to get as close as 3.6 million miles--not even within lunar orbit. But it's close enough for astronomers to get a really good look at it, and broadcast its passage online. Just in time for my birthday, too. L. Marcus 1 Quote Link to comment Share on other sites More sharing options...
tkdguy Posted May 30, 2013 Author Report Share Posted May 30, 2013 Link To Article Okay--it's only supposed to get as close as 3.6 million miles--not even within lunar orbit. But it's close enough for astronomers to get a really good look at it, and broadcast its passage online. Just in time for my birthday, too. You beat me to it! Happy Birthday! Quote Link to comment Share on other sites More sharing options...
tkdguy Posted May 31, 2013 Author Report Share Posted May 31, 2013 Link To Article Okay--it's only supposed to get as close as 3.6 million miles--not even within lunar orbit. But it's close enough for astronomers to get a really good look at it, and broadcast its passage online. Just in time for my birthday, too. Look what they found out about the asteroid. Quote Link to comment Share on other sites More sharing options...
tkdguy Posted May 31, 2013 Author Report Share Posted May 31, 2013 what they found out about the asteroid.]Radiation risks on Mars journey[/url] Not exactly news, but it explains the level of rads astronauts would be exposed to. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted May 31, 2013 Report Share Posted May 31, 2013 what they found out about the asteroid.]Radiation risks on Mars journey[/url] Not exactly news, but it explains the level of rads astronauts would be exposed to. ... Glitch? Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted May 31, 2013 Report Share Posted May 31, 2013 Space diving suit in development. Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 1, 2013 Author Report Share Posted June 1, 2013 Getting closer to blast-off Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 1, 2013 Author Report Share Posted June 1, 2013 Space diving suit in development.Interesting! *raises eyebrow* Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 1, 2013 Report Share Posted June 1, 2013 Space diving suit in development.In other words: Interring. [/thompson twin] Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 2, 2013 Author Report Share Posted June 2, 2013 Not news but... Retrospective on Skylab Space Photo of the Day Quote Link to comment Share on other sites More sharing options...
Cancer Posted June 3, 2013 Report Share Posted June 3, 2013 Not news but... Retrospective on Skylab Space Photo of the Day Skylab came down on my 23rd birthday, my first one spent in grad school. Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 4, 2013 Author Report Share Posted June 4, 2013 Not news but... Retrospective on Skylab Space Photo of the Day My sister once had a classmate who claimed that a piece of Skylab killed her dog. Nobody believed her. Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 5, 2013 Author Report Share Posted June 5, 2013 Donated spy satellite telescope would suit NASA dark energy mission NASA to launch sun-watching satellite Multiverse or universe? China's latest manned mission to launch this month Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 5, 2013 Author Report Share Posted June 5, 2013 The sun's growth spurts Saturn-like planet discovered Quote Link to comment Share on other sites More sharing options...
IndianaJoe3 Posted June 6, 2013 Report Share Posted June 6, 2013 Echoes of Other Universes L. Marcus 1 Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 6, 2013 Author Report Share Posted June 6, 2013 Echoes of Other UniversesVery interesting. I should forward it to a friend, who is skeptical about parallel universes. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 6, 2013 Report Share Posted June 6, 2013 Not news but... Retrospective on Skylab Space Photo of the Day My sister was bitten by a moose once. Sorry. Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 6, 2013 Author Report Share Posted June 6, 2013 Where to look for life on Europa Curiosity to head toward Mount Sharp Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 8, 2013 Author Report Share Posted June 8, 2013 Evidence that ancient Mars was habitable Video of 1998 QE2 radar images Quote Link to comment Share on other sites More sharing options...
tkdguy Posted June 9, 2013 Author Report Share Posted June 9, 2013 Another big asteroid passed by Earth this weekend Quote Link to comment Share on other sites More sharing options...
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