Planet

An unexpected discovery is challenging our accepted understanding of how planets form. Astronomers have spotted a gigantic gas planet orbiting a small red dwarf star, which shouldn’t be possible according to current models.

Astronomers from Columbia University have a new theory about what's dimming Tabby's Star – and no, it’s not an alien megastructure.

Hubble has captured a new portrait of the ringed planet Saturn while the gas giant was at its closest point to Earth in its orbit.

Water is crucial to life as we know it, so it’s one of the key things astronomers look out for on exoplanets. And now, water vapor has been detected in the atmosphere of a potentially habitable exoplanet for the first time.

Analysis of Saturn’s interior describes jet streams that continue deep below the surface and thick liquid that “flows like honey”.

If it was in our solar system, the orbit of exoplanet HR 5183 b would swing from the asteroid belt to way out beyond Neptune.

Just how common are potentially habitable Earth-like planets? Researchers on a new study claim to have come up with the most accurate estimate yet – and they’re more common than you might think.

Data from the Juno probe found that Jupiter's core is less dense and more spread out than expected. Now, astronomers believe they have an answer – a huge ancient planet, with 10 times the mass of Earth, crashed into the gas giant in the early days of the solar system.

The Hubble Space Telescope has captured a detailed view of the largest planet in our solar system – the gas giant Jupiter. The portrait, which was captured on June 27, highlights the complex nature of Jupiter’s cloud surface, and showcases the gas giant’s most famous feature – the Great Red Spot.

In about five billion years’ time, the Sun will grow into a red giant, destroy the Earth and become a white dwarf star. But according to a new study, any aliens out there might still be able to pick up radio waves from Earth's planetary core – for up to a billion years.

New Hubble observations show that WASP-121b is a planet that’s so intensely hot it’s vaporizing heavy metals and venting them into space. As if that wasn’t enough, the poor planet is also being stretched into a football shape thanks to the strong gravity of its host star.

NASA’s TESS mission has been very busy lately, making many exoplanet discoveries. Now, the productive little satellite has made another important discovery – the closest super-Earth that’s potentially habitable.