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Jonathan Ocallaghan

Jonathan Ocallaghan

BBC

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The mysterious 'dark comets' prowling our Solar System

These strange objects could explain how water arrived on Earth, but may also be a previously unrecognised threat to our planet. Now, a spacecraft is...

09.08.2025 30

BBC

Jonathan Ocallaghan

The bizarre space explosions we can't explain

Astronomers have spotted around a dozen of these weird, rare blasts. Could they be signs of a special kind of black hole? Astronomers had never seen...

05.05.2025 90

BBC

Jonathan Ocallaghan

What the planets aligning really means

Stargazers will be treated to a rare alignment of seven planets on 28 February when Mercury joins six other planets that are already visible in the...

21.01.2025 300

BBC

Jonathan Ocallaghan

The search for our Sun's missing twin

Many stars in our galaxy exist in pairs, but our Sun is a notable exception. Now scientists are finding clues that it may once have had a companion...

28.12.2024 90

BBC

Jonathan Ocallaghan

The violent birth of the Geminid meteor shower

The Geminids are one of the astronomical highlights of the year, creating a spectacular show of shooting stars every December. Scientists are now...

14.12.2024 30

BBC

Jonathan Ocallaghan