Watch live: Atlas V rocket to launch NASA laser communications relay satellite and Space Force experiments

Update for Dec. 7, 3:58 am ET: The United Launch Alliance is now targeting a 5:03 a.m. EST (1003 GMT) launch time for today’s Space Test Project 3 mission carrying NASA’s Laser Communications Relay Demonstration satellite and Space Force payloads. The launch was pushed back an hour due to upper level winds. A U.S. military mission will get off the ground Tuesday morning (Dec. 7) after a two-day delay, and you can watch the liftoff live. A United Launch Alliance (ULA) Atlas V rocket is scheduled to launch the Space…

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Want to see Comet Leonard? Here are telescope and binoculars recommendations to spot it this month.

Itching to try out your new astronomy gear, or planning to buy a set?  Comet C/2021 A1 (Leonard), also known as Comet Leonard, is visible in binoculars and telescopes and will likely be relatively bright in the coming days, although we can’t say for sure as comet brightness is always unpredictable. Comet Leonard’s path through space should allow for good views, though. On Tuesday (Dec. 7), the Earth will pass through Leonard’s orbital plane or path, which will make the comet appear particularly bright thanks to its position relative to…

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Hubble telescope traces a spiral galaxy to chart our universe’s expansion

The spiral galaxy Mrk (Markarian) 1337, as imaged by the Hubble Space Telescope. (Image credit: ESA/Hubble & NASA, A. Riess et al.) The Hubble Space Telescope has captured a stunning spiral galaxy in a larger quest to chart the expansion rate of our universe. The new image of spiral galaxy Mrk (Markarian) 1337 shows its glittering stars shining roughly 120 million light-years away from Earth in the constellation Virgo. The Hubble Space Telescope prioritized ultraviolet and infrared (heat-seeking) wavelengths in this image, rendered in false color. Studying faraway galaxies like this helps…

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