Spitzer Telescope : NASA Finds Coldest Star Ever

Scientists using two NASA telescopes have discovered a new brown dwarf believed to be the coldest of its kind.

According to Space.com, a Penn State team used the Wide-field Infrared Survey Explorer (WISE) and Spitzer Space Telescope to spot the star that sits in the fourth-closest system to our own.

“It is remarkable that even after many decades of studying the sky, we still do not have a complete inventory of the sun’s nearest neighbors,” NASA scientist Michael Werner said in a statement Friday.

The star is surprisingly close: it ranks as the fourth-closest star system to Earth’s sun at 7.2 light-years away (the closest star system, Alpha Centauri, is four light-years away).

“It’s very exciting to discover a new neighbor of our solar system that is so close,” said Kevin Luhman, a Pennsylvania State University astronomer. “And given its extreme temperature, it should tell us a lot about the atmospheres of planets, which often have similarly cold temperatures.”

The temperatures on this brown dwarf is between minus-54 and 9 degrees Fahrenheit. Brown dwarfs lack the mass to shed light or much heat, making them hard to detect without a telescope that can use an infrared lens.

Other brown dwarf stars that humans have discovered have been approximately room temperature.

Agencies/Canadajournal