Sentences with phrase «by meteorite fragments»

Not exact matches

Of the 731 rock samples the Apollo 16 astronauts brought home in April 1972, nearly all were breccia, composites formed of fragments fused together — probably by the heat and pressure of meteorite impacts.

Pizzarello and her team hydrothermally treated fragments of the meteorite and then detected the compounds released by gas chromatography - mass spectrometry.

After the meteor was sighted streaking through the sky on 22 April, meteorite hunters found fragments of the rock, identified by the «fusion crust» that forms when it burns in the atmosphere.

The graphite fragments, Steele says, «are a remnant of basically a carbon - rich dust after an impact from a meteorite containing carbon, or the carbon may have condensed from a gas» released by an impact.

At that size, 2008 TC3 was always likely to be destroyed in the atmosphere — although some fragments may have survived to fall as meteorites — but the collision may help to highlight the risks posed by larger bodies.