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tsuomela : planetary   28

BLDGBLOG: Landscapes by Remote Control
"Clancey's look at the "robotic geologists" humans have sent to Mars over the past decade explores the strange phenomenon of science-at-a-distance, pursued, measured, recorded, and analyzed by human controllers located on another planet. "
book  review  science  remote-sensing  satellite  planetary  astronomy  mars  material 
october 2012 by tsuomela
PH1 : A planet in a four-star system « Planet Hunters
"Today we’re pleased to announce the discovery of the first confirmed planet discovered by Planet Hunters, and it’s a fabulous and unusual world. Labelled ‘Planet Hunters 1′ (or PH1) in a paper released today and submitted to the Astrophysical Journal, it is the first planet in a four-star system."
astronomy  citizen-science  planetary 
october 2012 by tsuomela
Testing Anthropic Selection: A Climate Change Example - Astrobiology
"Planetary anthropic selection, the idea that Earth has unusual properties since, otherwise, we would not be here to observe it, is a controversial idea. This paper proposes a methodology by which to test anthropic proposals by comparison of Earth to synthetic populations of Earth-like planets. The paper illustrates this approach by investigating possible anthropic selection for high (or low) rates of Milankovitch-driven climate change. Three separate tests are investigated: (1) Earth-Moon properties and their effect on obliquity
astrobiology  astronomy  planetary  anthropic-principle  life  biology  climate 
april 2011 by tsuomela
Long-Neglected Experiment Gives New Clues to Origin of Life - ScienceNOW
Reports on reanalysis of 1950s classic Stanley Miller experiments that created amino acids in early Earth gas environments.
life  biology  exobiology  planetary  geology  paleontology  history  earth  earth-science 
march 2011 by tsuomela
White Dwarfs, Habitable Zones and Other Earths - Technology Review
"Today, Eric Agol at the University of Washington in Seattle points out that planet hunters may be missing a trick. He says that white dwarfs could be good targets for exoplanet searches.

He points out that they are as common as Sun-like stars, that the most common ones have a surface temperature of about 5000 K and that this should produce a habitable zone at distances of about 0.01 AU for periods in excess of 3 billion years. That's long enough for something interesting to have emerged on these bodies. "
astronomy  astrobiology  exobiology  life  planetary  stellar 
march 2011 by tsuomela
APOD: 2011 March 8 - Titan, Rings, and Saturn from Cassini
"How thin are the rings of Saturn? Brightness measurements from different angles have shown Saturn's rings to be about one kilometer thick, making them many times thinner, in relative proportion, than a razor blade. This thinness sometimes appears in dramatic fashion during an image taken nearly along the ring plane. The robot Cassini spacecraft now orbiting Saturn has now captured another shot that dramatically highlights the ring's thinness."
astronomy  photography  satellite  planetary 
march 2011 by tsuomela
orrery_2006.swf (application/x-shockwave-flash Object)
Beautiful visualization of planetary movement in both Tychonian (geocentric) and Copernican (heliocentric) models.
astronomy  flash  orrery  planetary  planetarium  demonstration  visualization 
january 2011 by tsuomela - News Blog - Are You Smarter Than a Computer?
"These days you can dabble in all kinds of citizen-science activities — y'know, the ones that let you sift through massive observational databases in the hope of finding something scientifically important. But how about one that directly pits humans against computers in a quest to find worlds around other stars? That's what awaits participants in Planet Hunters, the latest offering from the good folks at Zooniverse."
citizen-science  science  astronomy  planetary 
december 2010 by tsuomela
3 Jupiter Fireballs Spotted—Sky-Watching Army Needed?
With backyard astronomers having proven their mettle, A Web-based global amateur network for monitoring Jupiter impacts would prove valuable, the Space Science Institute's Hammel said.

Such a network is forming "organically already," she added. "All that would be needed are specific protocols," such always noting the duration of a flash and notifying professional astronomers.
science  astronomy  citizen-science  co-science  amateur  planetary  observation 
august 2010 by tsuomela
Space exploration: To infinity and beyond | The Economist
Mr Pyne seeks to identify the necessary conditions for successful exploration. Technology is vital but it does not, in itself, drive discovery. An insatiable curiosity is needed, but this, in itself, will not guide success either. One of the reasons why the Voyager missions were reinstated was that the alignment of the planets offered a rare opportunity for travel that would not be repeated for almost two centuries. Still, that was not enough. In the wider world exploration is in hock to politics, where it exists to promote national glory. Moreover such flag waving is born of rivalry between nations. The exploration of the solar system would not have happened, Mr Pyne argues, without the cold war on Earth. What looks today like the scientific mapping of the features of the outermost reaches of the solar system began life as having little to do with the discipline.
book  review  space  exploration  science  politics  cold-war  history  planetary  astronomy 
august 2010 by tsuomela
Jupiter gets another cosmic punch, shows new bruise - Ars Technica
Over the weekend, Jupiter was apparently struck by an unknown object, probably a comet or an asteroid. The discovery was made by Anthony Wesley in Australia, an amateur astronomer well-known in both the amateur and professional astronomy communities.
astronomy  planetary  Jupiter  photography  amateur 
july 2009 by tsuomela
Phoenix Lander Team: It Snows at Night on Mars | Universe Today
Phoenix landed at the north arctic region on Mars (68.22°N, 234.25°E) on May 25th, 2008. On Mars, this was just before the summer solstice. Phoenix operated for 5 months, and was able to observe conditions as the seasons changed from summer to winter, giving science teams an unprecedented look at the planet's changing weather patterns, including frost and precipitation.
astronomy  planetary  Mars  observation 
july 2009 by tsuomela
the physics arXiv blog » Blog Archive » The puzzle of planet formation
"At the heart of the problem is the fascinating question: why are all the planets different?

The ones in our solar system ought to have formed out of the same stuff at more or less the same time and yet no two are alike. And now the extrasolar planets seem to be demonstrating a similar variety."
astronomy  astrophysics  arxiv  preprints  planetary 
february 2009 by tsuomela
Phoenix Mars Mission - Home
The University of Arizona is honored to be the first public university to lead a mission to Mars. The Phoenix Mars Mission, scheduled to land May 25, 2008, is the first in NASA's "Scout Program." Scouts are designed to be highly innovative and relatively
astronomy  physics  astrophysics  planetary  Mars 
june 2008 by tsuomela

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