natural sciences
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Hear the Sound of a Black Hole ‘Echo’
Using a new tool they nicknamed the “Reverberation Machine,” researchers have detected eight echoing black hole binaries in the Milky Way. They then converted those X-ray echoes into sound waves, which you can listen to in the video below.
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Cosmic ‘Lighthouses’ That Beam Gamma Rays Could Reveal Gravitational Waves All Around Us
A team of astronomers have compiled 12.5 years of data from the Fermi Gammy-ray Space Telescope to form a gamma-ray pulsar timing array, a system of cosmic lighthouses that could help reveal ripples in spacetime.
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How Astronomers Spotted the Oldest Known Star
The Hubble Space Telescope recently observed the light of a star that existed in the first billion years of the universe. It is the most distant individual star ever seen.
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Environmental Activists Glue Themselves to Roadway in Berlin
Protestors in Berlin, Germany glued themselves to a main roadway Monday morning, demanding legislation against food waste and cuts in greenhouse gas emissions from the agricultural industry. Their protest caused major traffic jams in the capital and followed actions held throughout Germany last week. More than 20 activists organised by the group “Last Generation” took part…