Astronomers have discovered a strange new object in our Milky Way galaxy. The celestial object is emitting X-rays around the ...

A unique celestial event will grace the night sky on May 29, 2025, as the crescent moon aligns with two bright stars to form an unmistakable smiley visible to millions of skywatchers.According to ...

A celestial object some 15,000 light-years away is emitting bright flashes of radio and X-rays that scientists are struggling ...

Researchers traced long, bright radio pulses, combined with X-rays, to an intriguing cosmic object 15,000 light-years from ...

These dark sky sanctuaries, reserves, parks, and trails invite you to immerse yourself in the wonders of our night skies.

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the ...

The remote-imaging system (left) shoots eight infrared laser beams (red line added to show the path) at a target (right) in a building 1.36 km away. Light reflecting off the target is collected by the ...

In a Universe that was only 700 million years old, long before Earth even formed, something unexpected happened. A massive ...

NASA hasn't landed humans on Mars yet. But thanks to robotic missions, scientists now know more about the planet's surface ...

In 1987, an enormous blue arc, thought to be hundreds of trillions of miles long, was first considered one of the largest ...

This NASA/ESA Hubble Space Telescope image offers us the chance to see a distant galaxy now some 19.5 billion light-years ...

The quirks of light moving through gas are the cause of stellar twinkling, which can be a bane—and sometimes a boon—for ...