Twenty-eight years into its tour of the universe, Voyager I reaches the edge of the solar system. “[P]roject scientists, working from models of a phenomenon never before directly observed, finally agreed that data from Voyager 1’s tiny 80-kilobyte computer memory showed that the spacecraft had passed through termination shock to the ‘heliosheath,’ a frontier of unknown thickness that defines the border with interstellar space.“
Category: The Solar System
That’s no moon, it’s a…uh, a moon.
The Cassini discovers a new moon within Saturn’s rings. “Tentatively called S/2005 S1, the moon measures four miles across and is about 85,000 miles from the center of Saturn.” (Via Corsairs United.)
Life on Mars, Death from Space.
“I’d give it a 50-50 shot that you could find it somewhere underground. But then that’s a guess.” The NYT surveys the current thinking about prospects of Martian life, and how astrobiologists plan to go about proving or disproving its existence. (To wit, the European Space Agency plans to send an tricked-up rover to the red planet after 2011…hopefully, it’ll get past the Dubya Pentagon’s rash of Moonraker weapons.) Update: In somewhat related news (to the second story), Slate‘s Fred Kaplan assesses the Pentagon’s overly enthusiastic vision for ground-based future tech.
Ice, Ice, Baby.
Alright, stop, collaborate, and listen — Images sent back by the ESA’s Mars Express show the remants of icebergs once floating in a Martian Sea near the equator, and suggest that large ice blocks may well still exist just underneath the dusty surface (increasing both the chances of life on the Red Planet and the prospects for a successful manned mission.) Word to your mother.
Caverns of Mars.
After perusing “methane signatures and other possible signs of biological activity,” two NASA researchers claim there may well be life presently existing in subsurface Martian caves. We’re talking mitochondria, not Morlocks…but still, such a discovery would be exciting stuff, to say the least.
Titan A.E.
Score one for the ESA: The Huygens probe successfully lands on Titan and broadcasts images from the surface for five hours (a.k.a. much longer than expected.) (See, NASA? It’s much easier to pull these types of missions off when you don’t have to convert from standard to metric and back.) And now, for Europa… Update: 2020 Hindsight has done an exemplary job today of covering the details and implications of the landing.
Under a Blood Red Sky.
Once in a blue moon? Not even. As it turns out, Game 4 of the World Series will be played under a lunar eclipse. I think the Series will go more than four, but if it doesn’t…
Lord of the Rings.
NASA’s Cassini sends back detailed pics of Saturn’s finest.
Blue Planets, Red Planets.
The two NASA rovers have completed one facet of their mission, and the results are exciting: There was in fact water on Mars. And where there’s water, there’s…sea monkeys?
Ares or Bust.
Via a frequent reader, Explore Mars Now, a website which attempts to visualize red-planet-viable spacecraft using existing technology. Well, it’s already more realistic than Mission to Mars.