In astronomy, elements other than hydrogen and helium are called metals. While that might make your high-school chemistry teacher cringe, it makes sense for astronomers. The two lightest elements were the first to appear ...
Astronomy
Jun 12, 2023
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228
Did humanity miss the party? Are SETI, the Drake Equation, and the Fermi Paradox all just artifacts of our ignorance about Advanced Life in the universe? And if we are wrong, how would we know?
Astronomy
May 12, 2023
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174
Supermassive black holes (SMBHs) lurk in the center of large galaxies like ours. From their commanding position in the galaxy's heart, they feed on gas, dust, stars, and anything else that strays too close, growing more massive ...
Astronomy
Feb 16, 2023
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155
The stately sweeping spiral arms of the spiral galaxy NGC 5495 are revealed by the NASA/ESA Hubble Space Telescope's Wide Field Camera 3 in this image. NGC 5495, which lies around 300 million light-years from Earth in the ...
Astronomy
Oct 3, 2022
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15
The laser that will be the most powerful in the United States is preparing to send its first pulses into an experimental target at the University of Michigan.
Optics & Photonics
Sep 15, 2022
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80
The James Webb Space Telescope (JWST) continues to deliver stunning images of the universe, demonstrating that the years of development and delays were well worth the wait. The latest comes from Judy Schmidt, an astrophotographer ...
Astronomy
Aug 19, 2022
2
159
NASA's images of the sun's dynamic and dazzling beauty have captivated the attention of millions. In 2021, the US Postal Service is showcasing the sun's many faces with a series of sun Science forever stamps that show images ...
Space Exploration
Jan 18, 2021
0
53
Galaxies die quickly—that is the conclusion of a new study that examines the mechanism that switches galaxies from an active star-forming phase to one of quiescence.
Astronomy
Oct 29, 2020
2
20
The galaxy depicted in this image taken by the NASA/ESA Hubble Space Telescope is a barred spiral known as NGC 7541, in the constellation of Pisces (the Fishes).
Astronomy
Jan 31, 2020
0
102
A project lead by an international team of researchers use publicly available data with images of the sky dating as far back as the 1950s to try to detect and analyse objects that have disappeared over time. In the project ...
Astronomy
Dec 12, 2019
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