Showing posts with label red dwarf. Show all posts
Showing posts with label red dwarf. Show all posts

Wednesday, 25 June 2025

Stellar flares may hamper search for life in promising star system

 


Image courtesy of Mark Garlick/Alamy

Joel Kontinen

Some planets are formed that they have life. But only exoplanets tend not to have it. The latest case is the Trappist 1 saga which probably has none.

Astronomers have been trying to detect atmospheres on planets orbiting TRAPPIST-1, but bursts of radiation from the star make this challenging.

The search for atmospheres around the TRAPPIST-1 star system, one of the most promising locations for life elsewhere in the galaxy, might be even more difficult than astronomers first thought because of short-lived radiation blasts from the star.

TRAPPIST-1, first discovered in 2016, is a small red dwarf star about 40 light years from Earth with at least seven planets orbiting it. It is a prime target for astronomers hoping to detect extraterrestrial life because several of its planets appear to sit in a habitable zone where temperatures are just right for liquid water.

Source: 

Alex Wilkins 2025 Stellar flares may hamper search for life in promising star system | New Scientist 23 June


Friday, 17 June 2022

Two new super earths found

Image courtesy of  NASA, JPL,  Caltech.  

Joel Kontinen

NASA has found two super earths, while the planets are far too hot and cannot support life

The star HD 260655 is cooler and dimmer than our sun, the proximity of the planets to the red dwarf means the worlds would be way too hot for life. 

HD 260655b has an average temperature of 435 degrees Celsius or 816 degrees Fahrenheit, while HD 260655c is milder but still a fiery (284 degrees Celsius) or 543 degrees Fahrenheit. 

Not all super earhs can harbour life. 

Soure:

Tonkin,  Sam, 2022. NASA discovers two rocky 'super-Earths' orbiting a nearby dwarf star that could provide vital clues in the search for alien life MaiL Online,