tkdguy Posted January 29, 2014 Author Report Share Posted January 29, 2014 Col. Chris Hadfield Q&A New Telescope Will Be Largest Ever Pac Mac Nebula Quote Link to comment Share on other sites More sharing options...
tkdguy Posted January 30, 2014 Author Report Share Posted January 30, 2014 Jade Rabbit Malfunctions Quote Link to comment Share on other sites More sharing options...
Zeropoint Posted January 31, 2014 Report Share Posted January 31, 2014 Blessings of Jebediah Kerman upon you, Jade Rabbit! L. Marcus 1 Quote Link to comment Share on other sites More sharing options...
tkdguy Posted January 31, 2014 Author Report Share Posted January 31, 2014 NASA sued over Martian rock Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 5, 2014 Author Report Share Posted February 5, 2014 Polaris is getting brighter Quote Link to comment Share on other sites More sharing options...
Old Man Posted February 7, 2014 Report Share Posted February 7, 2014 Kepler rises from the ashes! Christopher and tkdguy 2 Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 10, 2014 Author Report Share Posted February 10, 2014 NASA finds birth certificate of oldest star NASA plans to mine water on the moon Quote Link to comment Share on other sites More sharing options...
Cancer Posted February 10, 2014 Report Share Posted February 10, 2014 NASA finds birth certificate of oldest starNot as exciting as it might be, unfortunately; the number doesn't conflict with the latest value to come out of analysis of the cosmic microwave background. The main point is that the error bars on the stellar parallax in this NASA study (which come from an intensive Hubble set of measurements) are tight enough that the stellar evolution fit has small enough uncertainties (+/- 0.8 Gyr) to be interesting. Even though the new parallax which is the measurement behind this article is just about identical with the previous result from the HIPPARCOS mission, the uncertainties with HIPPARCOS are so much larger that an enormous (and therefore not very interesting) range of ages is permitted with the old value. In this case, the Wikipedia article on HD 140283 is OK ... my nom de Wiki is BSVulturis, and I bashed together the main thrust of that article last May-June when I saw the hash that was in that version of the article. EDIT: I got a preprint today -- only scanned it, have to read in more detail -- which may be the one I heard vaguely about related to this one. They've got a star (with only a survey number for a designation) with [Fe/H] < -7.1. That is, the ratio of iron atoms per hydrogen atom in that star is lower by more than a factor of 10 million than it is in the Sun. They do not detect iron or much of anything else in the star (but they do detect lithium, carbon, magnesium, and calcium). It isn't quite Population III but it's really close ... only one very early supernova made contributions to this one. EDIT^2: The star is SMSS J031300.36-670839.3, and now you know about as much as you did before. Quote Link to comment Share on other sites More sharing options...
dmjalund Posted February 11, 2014 Report Share Posted February 11, 2014 Is it the long-form birth certificate? Quote Link to comment Share on other sites More sharing options...
Cancer Posted February 11, 2014 Report Share Posted February 11, 2014 The short form is here. There are links to the long form (which may be behind subscriber walls, though the arXiv version should be open access). Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 12, 2014 Author Report Share Posted February 12, 2014 Giant sunspot Quote Link to comment Share on other sites More sharing options...
Old Man Posted February 12, 2014 Report Share Posted February 12, 2014 Jade Rabbit KIA (hypothermia) Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 14, 2014 Author Report Share Posted February 14, 2014 Flushing chocolates down the toilet -- for SCIENCE! Sochi seen from space Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 18, 2014 Author Report Share Posted February 18, 2014 LADEE's first lunar photos Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 19, 2014 Author Report Share Posted February 19, 2014 Space dust is filled with building blocks for life Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 19, 2014 Author Report Share Posted February 19, 2014 Photos of Saturn's auroras Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 25, 2014 Author Report Share Posted February 25, 2014 Brightest lunar explosion Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 26, 2014 Author Report Share Posted February 26, 2014 700+ exoplanets discovered Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted February 26, 2014 Report Share Posted February 26, 2014 Hmh. Space is getting untidy. Quote Link to comment Share on other sites More sharing options...
Christopher Posted February 26, 2014 Report Share Posted February 26, 2014 Hmh. Space is getting untidy. It has been like this since before our ancestors evovlved. We just never really saw it before. tkdguy 1 Quote Link to comment Share on other sites More sharing options...
Spence Posted February 27, 2014 Report Share Posted February 27, 2014 It has been like this since before our ancestors evovlved. We just never really saw it before. Nope, no sir.... They didn't exist before we looked for them. Next thing you be telling me the Sun doesn't revolve around the earth....sheeesh.... Quote Link to comment Share on other sites More sharing options...
tkdguy Posted February 27, 2014 Author Report Share Posted February 27, 2014 Water found in exoplanet's atmosphere Quote Link to comment Share on other sites More sharing options...
tkdguy Posted March 5, 2014 Author Report Share Posted March 5, 2014 NASA has been thinking about a mission to Europa for a while now. Maybe it will come to fruition within the next decade. http://news.yahoo.com/nasa-plots-daring-flight-jupiters-watery-moon-215733641.html L. Marcus 1 Quote Link to comment Share on other sites More sharing options...
tkdguy Posted March 6, 2014 Author Report Share Posted March 6, 2014 Massive black hole spins at 0.5c Near miss today Video: galaxy being torn apart Quote Link to comment Share on other sites More sharing options...
tkdguy Posted March 8, 2014 Author Report Share Posted March 8, 2014 You again? Breaking up is hard to do Cancer 1 Quote Link to comment Share on other sites More sharing options...
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