--- Friday, October 23, 2020 ---
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** 4U 1916-53: Einstein's Theory of Relativity, Critical for GPS, Seen in Distant Stars
A binary system with a neutron star and companion located about 29,000 light years away.
Read the
article and rate the image at:
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**Chandra Blog:
Einstein's Theory of Relativity, Critical for GPS, Seen in Distant Stars
What do Albert Einstein, the Global Positioning System (GPS), and a pair
of stars 200,000 trillion miles from Earth have in common?
**Chandra Resources: Brick by Brick: Building the Universe
This
activity page also includes a 3-D model of supernova remnant Cassiopeia
A based on the actual science data that you can build brick by brick,
as well as some simple at-home spacecraft and explorers to design that
you can be as creative with as you like. Enjoy building your universe
with bricks!