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Tag Archives: asteroid
Almahata Sitta: A meteorite suggests a new way to form amino acids
Asteroid collision, NASA Hubble Space Telescope picture….credit: NASA, ESA, D. Jewitt Finding amino acids, the building blocks of life, in meteorites is not new. Finding them in a meteorite that is a fragment of an asteroid collision, a piece formed at more than two thousand degrees Fahrenheit (1100 degrees Celsius) – now that makes astrobiologists [...]
Posted in News: Exogenous Life Also tagged Almahata Sitta, amino acid, chirality, exogenous life, Hubble, life origin, meteorite, NASA, proteins Leave a comment
Two Notable Space Successes
Concerning space missions, there’s always something happening in space. Most of it is ‘routine’ in the sense that what happens was expected and a normal part of the mission. Re-supply of the International Space Station generally falls into that category (except a couple of weeks ago when the resupply vehicle missed the station on the [...]
Posted in News: Space Exploration Also tagged ESA, flyby, IKAROS, JAXA, Lutetia, photon, propulsion, Rosetta, Saturn, solar-sail, spacecraft, Venus Leave a comment
Science panel: Chicxulub did it
Sometimes ‘the facts’ discovered by science answer questions by themselves, but much of the time facts are used for competing hypotheses. Sometimes more facts settle the issue of which hypothesis better fits the facts, but like as not, the ‘better fit’ is a matter of interpretation. If the issue at hand is important enough, scientists [...]
Posted in Impact: Impact Event Also tagged astrophysics, Chicxulub, Deccan Traps, geology, impact event, K-Pg mass extinction, paleontology, volcanism Leave a comment
New Report: Get real about asteroids hitting Earth
It has been said, and said more often these days, that humanity is good at dealing with trouble in the here-and-now; and terrible at dealing with disaster in the future. Consider the response to the Haiti earthquake on one hand, and the just released report from the National Research Council (USA), Defending Planet Earth: Near-Earth [...]
Russians plan asteroid diversion
Nazdrovia! Nothing like starting off 2010 with a little talk of Armageddon (the movie). Rumors were flying around the Internet just before the New Year that the Russians are planning a mission to divert the asteroid 99942 Apophis away from Earth collision.
Asteroid 2005 YU55: No impact on the neighborhood