Chile, Argentina prepare for spectacular solar eclipse

Day will briefly turn to night Tuesday over large parts of Chile and Argentina as a total eclipse of the Sun plunges a vast swath of the southern Pacific and the cone of South America into darkness.

The faint glow of cosmic hydrogen

A study published recently in Nature has revealed the presence of a hitherto undetected component of the universe—large masses of gas surrounding distant galaxies. An international team from some 10 scientific institutions ...

A quiet Sunday night discovering a supermassive black hole

Earlier this year, on a quiet Sunday night, my colleague Jack and I found the fastest-growing supermassive black hole in the known universe. We were fortunate to be part of the team that made one of the greatest discoveries ...

What it takes to discover small rocks in space

Once every month, on average, somewhere on Earth a fireball appears out of nowhere and for mere seconds, casts a blinding flash across the sky before it blows up in a thunderous explosion. It happened last Saturday over southern ...

Tiny asteroid discovered Saturday disintegrates over Africa

A boulder-sized asteroid designated 2018 LA was discovered Saturday morning, June 2, and was determined to be on a collision course with Earth, with impact just hours away. Because it was very faint, the asteroid was estimated ...

Image: Our galaxy's heart

At first glance, this image may resemble red ink filtering through water or a crackling stream of electricity, but it is actually a unique view of our cosmic home. It reveals the central plane of the Milky Way as seen by ...

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