Gravitational waves

Despite moving at 18 miles per second, it still takes the Earth a year to make it around the Sun. For HM Cancri, an orbit takes a little bit less time: around five minutes. At that speed, HM Cancri is the fastest binary star pair ever discovered, with each white dwarf circling the other at a speed of 310 miles per second.

Detecting nuanced “glints” through spacetime could give us a view of dark matter and neutron stars.

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Stars are hot balls of plasma, but astronomers have now spotted a super strange one that may have a solid surface. Its intense magnetic field is strong enough to overcome its blistering temperatures and “freeze” its outer layers into a solid crust.

In the recent LIGO announcement, it was claimed the event was two colliding black holes 1.3 billion years ago. How do we know this?

The New Yorker wrote an article calledGravitational Waves Exist The Inside Story of How Scientists Finally Found ThemThe article describes how Professor Rainer Weiss idea to build a device sensitive enough to detect ripples in space-time became aprofessional obsession and a quest that spanned ahalfcentury This quest had a team of over 1000 scientists and engineers focused on the task

This time last year, a huge high-tech detector saw ripples in space-time from two colliding black holes. These physicists say that "everything has changed" in their work since it happened.

We can't give up on gravastars yet, argues a new paper.

Two neutron stars smashing together may produce a form of matter not seen before. If that happens, simulations suggest there would be a signal in gravitational waves resulting from the collision