This range aligns with theoretical predictions for Planet Nine’s distance and mass, estimated between 7 and 17 times that of Earth . The researchers initially identified 13 candidate pairs showing the ...

The NASA New Horizons spacecraft's extensive observations of Lyman-alpha emissions have resulted in the first-ever map from ...

The NASA New Horizons spacecraft's extensive observations of Lyman-alpha emissions have resulted in the first-ever map from the galaxy at this important ultraviolet wavelength, providing a new look at ...

This spectrograph map, generated from data collected by NASA's New Horizons probe, depicts the relatively uniform brightness ...

The NASA New Horizons spacecraft’s extensive observations of ... “Understanding the Lyman-alpha background helps shed light on nearby galactic structures and processes,” said Randy Gladstone, a ...

Skywatchers throughout the Northern Hemisphere are enjoying views of the newly discovered Comet SWAN.

It was the first of two asteroids visited by NASA’s Dawn spacecraft ... willing to get up early. Pluto stands stationary this morning at 2 A.M. EDT against the background stars of Capricornus.

Last year, a probe it had dispatched in 2006 virtually re-discovered Pluto as a first act on the ... (The amount of annual exposure to background radiation on Earth is less than one rad.) ...