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Bad astronomy

Le fonti da cui sono tratti gli articoli inseriti nella sezione Documenti di Elettroni.

When worlds collide
10 Ago 2009 - 23:49 | Phil Plait

The Spitzer Space Telescope has detected signs of an interplanetary smashup, and oh, what a colossal event it was… apparently, 100 light years away around the young star HD 172555, an object the size of the Moon slammed into a planet the size of Mercury!

Kepler works!
6 Ago 2009 - 19:54 | Phil Plait

Drawing of NASA’s Kepler missionsNASA held a press conference today about early scientific results from the Kepler space telescope, a mission designed to detect Earthlike planets orbiting distant stars. Kepler has not yet detected such a planet — that will take at least a couple of years to do — but the good news is that Kepler works! New results show that should they exist, Kepler has the ability to find such planets.

Saturn’s rings do the wave
11 Giu 2009 - 22:22 | Phil Plait

The first thing you should know is that Saturn’s rings are incredibly flat. If you scaled them down to the size of a piece of paper, they’d actually be far thinner than a single sheet of that paper. In fact, even though they’re about 200,000 kilometers across, they are only at most a few dozen meters thick!

What value space exploration?
14 Apr 2008 - 19:38 | Phil Plait

Fraser at Universe Today had a good thought — he (like any space enthusiast) gets asked about the value of space exploration all the time. So why not post an answer, and ask others to send in answers as well?