A star passed near Earth and the Sun and jostled objects in the Oort Cloud 2.5 million years ago, sending them on a journey towards us. They are all long-period comets, meaning most of them would ...

Halley’s Comet is one of the most famous visitors in our Solar System. It is a massive, peanut shaped object made of ice, ...

On June 30, 1908, a giant fireball exploded over the forests of Tunguska in Siberia. The impact leveled hundreds of miles of ...

June 30 marks Tunguska, Congo independence, and Soyuz 11, plus events from Hernán Cortés to Tower Bridge, Hitler’s purge, and ...

Around 7:15 am on June 30 in 1908, during the reign of Tsar Nicholas II, an object from space entered Earth's atmosphere over ...

As Iran and US President Trump contradict over talks in Qatar, Israeli strikes killed five people, including a child, in the ...

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A major black hole merger event is unfolding only 500 million light-years away, and when it happens, Earth will feel the ...

CAPE CANAVERAL — NASA is racing to save an aging telescope from falling back to Earth with a daring rescue mission. The $30 ...

This year’s Asteroid Day has planned events worldwide and online. It acts as a reminder about advances in planetary defense.

The Tunguska space object was most likely a fragment of a comet’s icy nucleus, which turned into a cloud of water vapor at the moment of the blast, expl ...