planetary science

The Great Dark Spot (top), Scooter (middle white cloud),[97] and the Small Dark Spot (bottom), with contrast exaggerated.

Podcast Episode 79 l Neptune – The Real Blue Planet

Podcast Episode 79 is all about Neptune, which is The Real Blue Planet in our Solar System, as well as being an ice-giant orbiting the Sun from far away.

Photograph of Neptune in true colour by Voyager 2 in 1989.

Neptune – The Real Blue Planet

Neptune is The Real Blue Planet, the Ice Giant of our Solar System residing far away from the Sun near the Kuiper Belt. The only one we cant see with the naked eye.

Image shows artists impression of Mars core. Analysis of Martian seismic data recorded by the InSight mission have revealed that Mars’s liquid iron core is surrounded by a150-​km thick molten silicate layer, as a consequence of which its core is smaller and denser than previously proposed. (Artwork: Thibaut Roger, NCCR Planet S / ETH Zürich)

Mars’ liquid iron core is smaller and denser than previously thought, study

Mars’ liquid iron core is smaller and denser than previously thought, according to a new study analysing InSight lander's data.

Perspective view of a lobate scarp on Mercury named Carnegie Rupes, colour-coded according to surface altitude. The crater near the middle is nearly 40 km across. NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

Mercury is shrinking and getting smaller

Mercury is shrinking and getting smaller according to latest research because its interior has been cooling down as internal heat leaks away.