Sentences with phrase «era rock samples»
Not exact matches
New research from a team including Carnegie's Erik Hauri demonstrates that oceanic volcanic rocks contain samples of recycled crust dating back to the Archean era 2.5 billion years ago.
http://religion.blogs.cnn.com/
The 2018 budget request cancels NASA's Asteroid Redirect Mission — an Obama administration - era project to bring part of an asteroid near the moon so astronauts could visit the space rock and retrieve samples — but included no details on cancelation other than it was needed «to accommodate increasing development costs.»