We have identified the coldest star ever found to produce radio waves—a brown dwarf too small to be a regular star and too massive to be a planet.
Astronomy
Jul 17, 2023
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71
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
4
174
Using NASA's Chandra X-ray observatory, astronomers have performed deep X-ray observations of a nearby active galaxy known as NGC 5728 and its active galactic nucleus (AGN). Results of the observational campaign, published ...
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
0
155
Using NASA's Swift spacecraft and ESA's XMM-Newton satellite, astronomers have observed NGC 5907 ULX1—the most luminous ultra-luminous X-ray pulsar known to date. Results of the observational campaign, published February ...
In a recent study published in the Astrophysical Journal Letters, an international team of researchers led by the University of Cologne in Germany examined how solar flares erupted by the TRAPPIST-1 star could affect the ...
Planetary Sciences
Dec 27, 2022
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829
New Chinese research suggests that optical variability in emission-line galaxies (ELGs) is likely caused by star-formation activity rather than the activity of supermassive black holes.
Astronomy
Dec 2, 2022
0
89
First in line to receive data transmissions from the James Webb Space Telescope, a team of astronomers at the University of California, Irvine and other institutions is using the unprecedentedly clear observations to reveal ...
Astronomy
Nov 14, 2022
0
140
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
0
15
