A really cool video from the Transition Region and Coronal Explorer (TRACE). TRACE is a NASA Small Explorer mission to image the solar corona and transition region at high angular and temporal resolution. Whatever that means. All I can say is that these video of the Sun rulz!

Well, in theory, massive amounts. Finding a way to store it, is still the biggest problem. But to properly visualize what a tiny amount of the energy that the Sun gives to Earth can do, here's a demonstration of a solar furnace melting a piece of steel in seconds. Now that's impressive!

A pretty spectacular video in ultraviolet capturing the transit of the Moon in front of the Sun. Here are some more details from the authors: "A million miles from planet Earth, last weekend the STEREO B spacecraft found itself in the shadow of the Moon. So, looking toward the Sun, extreme ultraviolet cameras onboard STEREO B were able to record a stunning movie of a lunar transit (aka solar eclipse), as the Moon tracked across the solar disk."

This is NASA WorldWind 1.4 and it makes Google Earth look like child's play. It just takes it to a next level. Besides exploring Earth, you can explore the Solar System's planets just like in Google Earth and see the volcanoes, craters and planet rings. It's plain awesome!

An improvement in dating techniques with argon-argon allows us to place more correctly the extinction of large reptiles. When did the dinosaurs become extinct? 65.5 million years ago, more or less 300 thousand years. This is the answer, or at least it was until yesterday. Thanks to a more refined timing technique, researchers from Berkley, California, have reduced by nearly 10 times the range of error, identifying with extreme precision the "moment" in which dinosaurs were extinct, which matches the passage between the era of geological Cretaceous and the Tertiary. The new answer is 65.95 million years ago, with a margin of error of only 40,000 years.