10/11/2025

Do interstellar objects pose a threat to Earth?

We know of three interstellar objects (ISO) that have visited our inner solar system. Oumuamua was the first one, and it came and went in 2017. 2l/Borisov, an interstellar comet, was next, appearing in 2019. And right now, ...

'Impossible' merger of two massive black holes explained

In 2023, astronomers detected a huge collision. Two unprecedentedly massive black holes had crashed an estimated 7 billion light-years away. The enormous masses and extreme spins of the black holes puzzled astronomers. Black ...

Tropical spiders craft giant doppelgängers as decoys

The extraordinary anti-predator strategy of two tiny, orb-weaving spider species has been uncovered by scientists from The Australian National University (ANU) and the University of Florida.

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