Space is a very big place, and as such, it's full of mysteries that scientists can't explain. Some of this is simply because it's impossible to fully observe, thanks to its sheer size and the ...

A distant world with carbon in its atmosphere and extraordinarily high temperatures is unlike any other planet we’ve seen, and it’s unclear how it could have formed ...

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...

Interstellar comet 3I/ATLAS makes its closest Earth approach on Dec. 19, offering astronomers a rare chance to study a visitor from beyond the solar system ...

The summer of 2024 will be a wild ride, astrologically speaking — and for more reasons than just the rare super blue moon that rose in August. A total of five planets are going retrograde between May ...

A very rare treat is about to grace Earth's night skies. On the evening of 28 February 2025, all seven of the other planets in the Solar System will appear in the night sky at the same time, with ...

New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building ...

Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size to Pluto. So, during the summer of 2006, members of the International ...

Planetary alignment, or conjunction, refers to the apparent close grouping of planets in the night sky as viewed from Earth, not necessarily a perfect linear alignment in space. These alignments occur ...