meteorite

Showing 4 posts tagged meteorite

How Do We Know How Old the Sun Is? The Royal Observatory, Greenwich, and animation studio Beakus join together to explain how Kepler and Newton’s laws help us figure out the weight of the sun, how the age of our solar system can be calculated by studying meteorites, and how that data helps us determine the sun’s age.

Previously from the Royal Observatory Greenwich, Measuring the Universe, and more videos about the sun.

very big meteor burned up over Chelyabinsk, a city in Russia just east of the Ural mountains, and about 1500 kilometers east of Moscow. The fireball was incredibly bright, rivaling the Sun! There was a pretty big sonic boom from the fireball, which set off car alarms and shattered windows.

Slate’s Bad Astronomy blog continues to update with videos and photos as more information is revealed (and corrected). In the incredibly clear video above, you can see the meteor as it was recorded on February 15, 2013 by a dashboard camera.

UPDATE: video link replaced.

From the archives: What is a meteor? And how do we study them?

Via Climate Adaptation.

Meteorites are the chunks of meteors that have hurtled through Earth’s atmosphere and landed/crashed on the ground. There are three types of meteorites: stone, iron and stony-iron, and once they’re in science labs to be studied, they need to be handled super-carefully.  The Smithsonian’s meteorite lab shows us exactly how carefully!

This is a big issue. We study meteorites to learn things about what has happened and is happening outside our own planetary system. If, in the process of that, we end up covering the samples with the detritus of Earth, then the message gets muddled. If you’re studying a meteorite, you want to be reasonably sure that you’re not accidentally studying dust or bacteria from this planet. Clean rooms like the one in this video make it easier to examine these samples in a way that is less destructive.

via BoingBoing.