Portal Space Systems says that a rapid-maneuverability space vehicle called Starburst will leverage technologies it's already ...

The only possibility left was an extraordinary one: a tidal disruption event, or TDE.

The BOAT – or Brightest of All Time, a record that has yet to be beaten – was a gamma-ray burst accompanying a supernova ...

This artist's concept depicts a supermassive black hole in the process of shredding a massive star—at least 30 times the mass ...

Is there anything more dramatic than an exploding star? More than just extraordinarily bright, energetic events that can ...

But most of the gold on Earth isn’t in our hands; it’s deep underground. During the planet’s formation, heavy elements like gold and platinum sank toward the molten iron core. Geologists estimate that ...

Astronomers have spotted the biggest flare ever seen erupting around a black hole, which also happens to be the most distant ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

The finalists for the Vallejo Sun's inaugural Best of Vallejo & Benicia contest are here! We received hundreds of nominations across 117 categories. Now the final round of voting begins – voting ...

An ominous-looking nebula named NGC 246 lurks in the constellation Cetus about 1,600 light-years away from Earth. It is ...

Astronomers observed the fading light of supernova SN 2025kg, which followed the fast X-ray transient (FXT) named EP 250108a.

Portal Space Systems, a Bothell-based startup, aims to harness the power of the sun to propel spacecraft, making it easier to ...