When a star that is more than eight times as massive as the Sun runs out of fuel, it undergoes a spectacular explosion called a supernova. They are the fossil relics of massive dead stars. Neutron stars and black holes are among the most extreme objects in the universe. Play An artist’s impression of a neutron star orbiting and colliding with a black hole. Both collisions happened around 900 million years ago, long before the first dinosaurs appeared on Earth. Remarkably, just ten days later, Laser Interferometer Gravitational-wave Observatory and Virgo detected gravitational waves from a second collision between a neutron star and a black hole. Laser Interferometer Gravitational-wave Observatory and Virgo observed gravitational waves – distortions in the very fabric of space-time – produced by the final 30 seconds of the dying orbit of the neutron star and black hole, followed by their inevitable collision. The first observation of a neutron star-black hole system was made on January 5, 2020. The new observations open up new avenues to study the life cycle of stars, the nature of space-time and the behaviour of matter at extreme pressures and densities. The two observations were made in January 2020, by the Laser Interferometer Gravitational-wave Observatory and the Virgo Observatory, both of which detect gravitational waves from the distant cosmos.Īfter 18 months of painstaking analysis, our discoveries are published in The Astrophysics Journal Letters. And that is exactly what my colleagues and I have done, by making two separate observations, just ten days apart, of an entirely new type of astronomical phenomenon: a neutron star circling a black hole before being gobbled up. In fact, maybe the only thing better is discovering it twice. One of the best things about being an astronomer is being able to discover something new about the universe. Teesta Setalvad’s release order signed, to walk out of jail soon.How a researcher found, almost accidentally, the first modern Indian treatise on government.Watch: Bull charges at tiger, who runs away, at Nagarahole Tiger Reserve in Karnataka.The story of a young American who made a fortune while Indian kingdoms fought among themselves.‘Sita Ramam’ review: Ambitious period romance overstays its welcome.Could post-retirement benefits for Supreme Court judges hamper judicial independence?.Kavita Krishnan quits all posts in CPI(M-L) after calling Soviet regime, China autocratic.JCB Prize for Literature 2022: Six translations (two from Urdu) feature in the longlist of 10 novels.Tale of two Constitutions: As Chile drafts a pluralistic future, some Indians aim for Hindu rashtra.‘They are polarising India’: Ex RSS worker on why he filed affidavit claiming VHP, RSS set off bombs.‘Tears of the Begums’ is an elegant translation of harrowing testimonies following the 1857 revolt.
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