'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 ...

China's Tianwen-1 orbiter spots 3I/ATLAS

The interstellar object known as 3I/ATLAS just flew past Mars, and China's Tianwen-1 mission managed to snap some pics with its high-resolution camera. According to the China National Space Agency (CNSA), the orbiter's high-resolution ...

Laser trial at ESO kickstarts new era of interferometry

Last week, four lasers were projected into the sky above the European Southern Observatory (ESO) Paranal site in Chile. The lasers successfully created an "artificial star" that astronomers can use to measure and then correct ...

The archaeologist's guide to colonizing other worlds

Models help scientists understand everything from the particles that make up the universe to massive superstructures of galaxies at the beginning of time. But sometimes they model more mundane, though perhaps even more complex, ...

AI controls satellite attitude in orbit for first time

As a true milestone on the path to autonomous space systems, a research team at Julius-Maximilians-Universität Würzburg (JMU) has successfully tested an AI-based attitude controller for satellites directly in orbit—a ...

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, ...

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