physical cosmology
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Webb Spots Second Ancient Supernova in Gravitationally Lensed Galaxy
Last month, astronomers focused the Webb Space Telescope on the galaxy MRG-M0138 and found something surprising: a supernova in the ancient universe, magnified for your viewing pleasure by the gravitational lensed galaxy. When stars die, they release a huge amount of energy which astronomers can observe as a bright light source called a supernova. The…
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Webb Telescope Data Confirms ‘Hubble Tension’ Is Not Hubble Telescope’s Fault
The rate of the universe’s expansion has vexed astronomers for decades. Called the Hubble constant, the figure is quite different depending on how you get to it—fittingly, a source of constant befuddlement to astrophysicists. Now, a team of astronomers have calculated the expansion rate with greater precision using the Webb Space Telescope, a $US10 billion…
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Galaxy Spotted By Webb Space Telescope is One of the Earliest Ever Seen
A galaxy first seen in a massive Webb Space Telescope deep field image a year ago is one of the earliest ever spotted, according to a team of astronomers that reviewed imagery of the structure. The galaxy dates to about 390 million years after the Big Bang (For reference, the universe as a whole is…
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Decoding Dark Matter and Energy: What You Need to Know About the Euclid Mission Launching This Weekend
Together, dark matter and dark energy comprise 95% of the known universe, yet scientists don’t know what they are. The Euclid telescope, set to launch to space from Florida on Saturday, may help decipher them.