Astrophysicists studying a popular exoplanet in its star's habitable zone have found that electric currents in the planet's upper atmosphere could create sufficient heating to expand the atmosphere enough that it leaves the ...
The concept of deadly mass extinctions wreaking destruction upon Earth's ecosystems millions of years ago is something that has fascinated the public and scientists alike for decades.
A team of international scientists has used NASA's James Webb Space Telescope to detect a new carbon compound in space for the first time. Known as methyl cation (pronounced cat-eye-on) (CH3+), the molecule is important because ...
Astronomy
Jun 26, 2023
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224
In a first-of-its-kind study, a research team, including Northwestern University's Brian Hoffman and Ajay Sharma, found that ancient bacteria could survive close to the surface on Mars much longer than previously assumed. ...
Astrobiology
Oct 25, 2022
2
883
Over the last 25 years, astronomers have found thousands of exoplanets around stars in our galaxy, but more than 99% of them orbit smaller stars—from red dwarfs to stars slightly more massive than our sun, which is considered ...
Astronomy
Aug 12, 2022
0
562
Something strange is afoot in the galaxy known as 1ES 1927+654: In late 2017, and for reasons that scientists couldn't explain, the supermassive black hole sitting at the heart of this galaxy underwent a massive identity ...
Astronomy
May 5, 2022
5
1109
When astronomers observe superwinds traveling at extremely high speeds from super star clusters, or "starbursts," they previously assumed the winds were driven by supernovae, the explosions of stars.
Astronomy
Nov 2, 2021
3
150
As planets in our solar system go, Venus is one for the textbooks.
Space Exploration
Aug 27, 2019
2
513
Astronomers have identified some of the earliest galaxies in the Universe.
Astronomy
Aug 16, 2018
119
977
Proxima b, an Earth-size planet right outside our solar system in the habitable zone of its star, may not be able to keep a grip on its atmosphere, leaving the surface exposed to harmful stellar radiation and reducing its ...
Astronomy
Jul 31, 2017
5
166
Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than x-rays, in the range 10 nm to 400 nm, and energies from 3 eV to 124 eV. It is so named because the spectrum consists of electromagnetic waves with frequencies higher than those that humans identify as the color violet.
UV light is found in sunlight and is emitted by electric arcs and specialized lights such as black lights. As an ionizing radiation it can cause chemical reactions, and causes many substances to glow or fluoresce. Most people are aware of the effects of UV through the painful condition of sunburn, but the UV spectrum has many other effects, both beneficial and damaging, on human health.
This text uses material from Wikipedia, licensed under CC BY-SA
