tag:blogger.com,1999:blog-270899075443508100.post8653337478687446172..comments2024-01-03T20:28:17.727-08:00Comments on Future Planetary Exploration: Osiris-Rex New Frontiers ProposalVan Kanehttp://www.blogger.com/profile/14227978868817989527noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-270899075443508100.post-64157036943421709162011-12-16T22:48:54.888-08:002011-12-16T22:48:54.888-08:00I was interested read this post.I was interested read this post.lexaprohttp://hfeel.org/cheap-lexapro-online-en.htmlnoreply@blogger.comtag:blogger.com,1999:blog-270899075443508100.post-21478857323885956122010-08-25T13:46:02.096-07:002010-08-25T13:46:02.096-07:00I really appreciate this information about The Osi...I really appreciate this information about The Osiris-Rex team.costa rica vacationhttp://www.eco-vacationscostarica.com/noreply@blogger.comtag:blogger.com,1999:blog-270899075443508100.post-72074681943589466312010-05-29T22:18:54.610-07:002010-05-29T22:18:54.610-07:00Those are quite detailed comments. Thanks for sha...Those are quite detailed comments. Thanks for sharing them. I believe that the heating of the surface of primitive bodies has been a concern for sample return missions.<br /><br />If anyone can shed more light on this issue, your comments would be appreciated.Van Kanehttps://www.blogger.com/profile/14227978868817989527noreply@blogger.comtag:blogger.com,1999:blog-270899075443508100.post-44578415275504561812010-05-29T21:59:55.796-07:002010-05-29T21:59:55.796-07:001999 RQ36 may have once been a primitive body in t...1999 RQ36 may have once been a primitive body in the asteroid belt but in it's current orbit it has experienced sub-solar temperatures over 400 K (127 C, 260 F), which have roasted a good part of the surface. Most of the asteroid has likely seen temperatures over 300 K (27 C, 81 F), which means that the volatiles have likely been driven away from the near-surface layers. So anything that OSIRIS-REX collects is going to be substantially modified from its original primitive state (unless the spacecraft can dig deep into the surface, which I very much doubt). It's not going to tell us all that the science team claims.<br /><br />Moreover, it is a pretty tremendous waste of money to collect samples from an asteroid that has likely already delivered meteorites to the Earth. Sure, we'll know what asteroid the samples originated from, but we don't know where in the main belt that asteroid came from. So what's the point?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-270899075443508100.post-18090106761627860792010-01-20T11:32:31.066-08:002010-01-20T11:32:31.066-08:00The PHA with the highest probability of impact is ...The PHA with the highest probability of impact is actually 1950 DA ... 1 in 300, more than 6 times more likely to hit than 1999 RQ36, according to the paper published in Science,<br /><br />http://neo.jpl.nasa.gov/1950daAnonymousnoreply@blogger.com