Space & the Universe
Imaging a Black Hole
The black hole selected for imaging resides in the center of the Messier 87 galaxy, 55 million light years away (324 quintillion miles away).
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Interview with Astronaut Don Pettit
We talk to Don about scary moments in space, immigrating to Mars, human spaceflight and more.
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How the Moon Got its Fault Scarps: Moonquakes and the Lunar Surface
The Moon is known for its varied landscape; impact craters dot its surface, many with picturesque rays extending from them across the highlands, and so-called mare, or basalt “oceans”, cover the lowlands. But one aspect of lunar geography that captur..
Einstein's Dreams Review
Einstein's Dreams takes the reader on a journey through different conceptions of time. What if time stood still? What if time slowed down on the highest mountain peaks? Find out why this modern classic is a must-read for those looking to dabble in physics, philosophy, or psychology.