Friday, 6 April 2018

Hubble Finds an Einstein Ring


These graceful arcs are a cosmic phenomenon known as an Einstein ring - created as the light from distant galaxies warps around an extremely large mass, like a galaxy cluster. via NASA https://ift.tt/2JrIFMa

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Best of 2025: Artemis II Countdown Demonstration Test

Artemis II crewmembers (left to right) NASA astronauts Christina Koch, mission specialist; and Victor Glover, pilot; CSA (Canadian Space Ag...