A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from ...

Mars and the moon will also be in conjunction tonight. If you're lucky enough to have clear skies tonight, you can catch a ...

Catch two transits of Io, spot sparkling star clusters, and view Mars at aphelion while the April Full Moon lights the sky this week.

This April, the skies put on a dazzling show – watch planets like Jupiter, Venus, and Mars glide across morning and evening ...

The two brightest nighttime stars available in the Butler sky are Sirius and Arcturus. April is the only month of the year we ...

Juno is scheduled for an upcoming flyby of Jupiter on May 7, during which it is set to carry out a close approach of the ...

NASA’s Juno spacecraft entered safe mode twice during a recent close pass of Jupiter, temporarily halting science operations. While safe mode is a normal precaution when anomalies are detected, the ...

A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from ...

The culprit was probably ... lie close to the gas giant planet. These radiation belts are incredibly unforgiving, made of charged particles that zip around at unrelenting speeds. Earth has ...

A pair of white dwarfs, located just 150 light-years from Earth, appears doomed to die in a type 1a supernova that will shine ...