Month: March 2016

The Stardust Mission

Missions that deliberately bring back extraterrestrial material to Earth are rare. The NASA Stardust, a probe that launched in  1999, sought to collect dust samples from the comet Wild 2’s tail. Prior to the mission, experts believed that the dust in comets’ tails would be pre-solar particles. Instead, what they found from the particles retrieved […]

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Plate Tectonics on Mars?

Active tectonic activity, as opposed to past and currently extinct activity, was thought to be limited to Earth among the terrestrial worlds. Tectonic plates on Earth cause activity such as earthquakes and volcanoes as well as mountain-building as they move atop the asthenosphere and recycle geological materials. However, UCLA scientist An Yin discovered evidence of plate […]

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