Tag Archive for 'Stellar flare'

An artist’s impression of a habitable exoplanet orbiting a red dwarf. Image credit: Sci-News.com / NASA.

Stellar Flares: Life Givers or Sterilizers of Worlds?

Aug 15, 2018 by James Romero

Have Carl Sagan and astrobiologists been too hard on stellar flares? A new study imagines an alternative scenario where they power photosynthesis around...

This Hubble WFPC2 image shows Alpha Centauri A (left) and Alpha Centauri B (right). Image credit: NASA / ESA / Hubble.

X-Rays Pose No Threat to Alpha Centauri AB Exoplanets, Chandra Data Show

Jun 12, 2018 by News Staff

New observations by NASA’s Chandra X-ray Observatory indicate the two brightest stars in the triple-star system Alpha Centauri are not pummeling any...

This illustration shows a red dwarf star orbited by a hypothetical exoplanet. Red dwarfs tend to be magnetically active, displaying gigantic arcing prominences and a wealth of dark sunspots. Red dwarfs also erupt with intense flares that could strip a nearby planet’s atmosphere over time, or make the surface inhospitable to life as we know it. Image credit: NASA / ESA / STScI / G. Bacon.

Intense X-Rays Could Sterilize Potentially Habitable Exoplanets

Apr 5, 2018 by News Staff

Intense radiation from host stars could strip away the ozone layer of Earth-like exoplanets and render them uninhabitable, according to a new study presented...

ALMA Records Giant Stellar Flare on Proxima Centauri

Feb 27, 2018 by News Staff

Using data from the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers discovered that a giant stellar flare erupted from Proxima Centauri...