Gaurav Khanna

Latest articles by Gaurav Khanna

a dark orb on the right is surrounded by a bright disk and further out by swirling dark red gasses. a jet of purple gas extends from the dark orb, shooting to the top left corner before a backdrop a infinite stars.

Black holes are mysterious, yet also deceptively simple − a new space mission may help physicists answer hairy questions about these astronomical objects

By Gaurav Khanna published

For years, physicists have been looking to prove that black holes are more complex than they seem. And a newly approved European space mission called LISA will help us with this hunt.

Black Holes
An artist's depiction of a supermassive black hole.

The 2020 Nobel Prize in physics awarded for work on black holes. An astrophysicist explains the trailblazing discoveries

By Gaurav Khanna published

Black holes are perhaps the most mysterious objects in nature.

Black Holes
For oversized, spinning black holes, the singularity that a spacecraft would have to contend with would be very gentle.

Spinning Black Holes Could Open Up Gentle Portals for Hypersonic Spacecraft

By Gaurav Khanna published

Feel like visiting another star system or dimension? You can do this by traveling through a spacetime portal of a black hole. But you better choose carefully. All black holes are not created equal.

Black Holes
expert voices, time travel, possibilities, infinite mass

Time Travel Is Possible — But Only If You Have an Object With Infinite Mass

By Gaurav Khanna published

Who wouldn't want to travel in time, glimpsing the dinosaurs or peeking at humans 2,000 years from now? Now physicists have designed a time machine that seems deceptively simple.

Astronomy