Space news stories

The mighty constellation of Orion the hunter is one of the greatest sights in the night sky.

Image from:http://deepskycolors.com/astro/JPEG/RBA_Orion_HeadToToes.jpg (Wiki Commons)

The gravitational waves we’ve detected so far have been like tsunamis in the spacetime sea, but it’s believed that gentle ripples should also pervade the universe. Now, a 13-year survey of light from pulsars scattered across the galaxy may have revealed the first hints of these background signals.

Image from: https://photojournal.jpl.nasa.gov/catalog/PIA24036 (Wiki Commons)

Around one of the galaxy’s oldest stars, an orange dwarf named TOI-561 just 280 light-years away, astronomers have found three orbiting exoplanets – one of which is a rocky world 1.5 times the size of Earth, whipping around the star on a breakneck 10.5-hour orbit.

Based on what we know about gravitational waves, the Universe should be full of them. Every colliding pair of black holes or neutron stars, every core-collapse supernova – even the Big Bang itself – should have sent ripples ringing across spacetime.