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Found 677 results for dwarf planet

Is an old NASA probe about to redraw the frontier of the solar system?

19 June 2024

The New Horizons mission to Pluto, now zooming out of the Kuiper belt, has made a discovery that could upend what we know about where the solar system ends

Pluto and the largest moon of Neptune might be siblings

18 June 2024

The chemical composition of Pluto and Triton suggests they originated in the same region of the outer solar system before the latter was pulled into Neptune’s orbit

Earth-like exoplanet found just 40 light years away – the closest yet

23 May 2024

A nearby planet named Gliese 12 b has an estimated surface temperature of 42°C (108°F), making it a promising candidate for liquid water and maybe life

Mystery of 'impossible' star resolved by three-body solution

14 May 2024

A white dwarf star orbiting a sun-like star was thought to be impossibly small, but now astronomers have found another star in the system that solves the puzzle

Planet caught in a gravitational 'tidal storm' is so hot that it glows

2 April 2024

A strange world is being stretched out of shape by its neighbouring planets, heating it up so intensely that it probably has a molten surface

Artist's impression of a planet skimming the surface of its star

Billions of stars have swallowed up a planet

20 March 2024

Twin stars that were born together should have the same composition, and the fact that many don’t suggests they have changed their chemistry by devouring planets

https://spaceplace.nasa.gov/gallery-earth/en/ NASA astronaut Reid Wiseman tweeted this photo from the International Space Station on Tuesday morning, Sept. 2, 2014. Credit: NASA/Reid Wiseman

It's time to accept that we are in the Anthropocene once and for all

13 March 2024

Humans are drastically changing the planet and the Anthropocene is a useful tool to help us deal with that – so let's stop quibbling over definitions

Asteroid impact event. Lateral sectioned view of an asteroid impact, similar to that which is thought to have caused the extinction of the dinosaurs around 65 million years ago. The impact took place at sea near the coast of the Yucatan Peninsula in Mexico, forming the Chicxulub crater (around 200 kilometres across). The impact threw trillions of tons of dust into the atmosphere and sent tsunamis (massive waves) around the globe, destroying coastal areas. Dust and water vapour in the atmosphere lowered global temperatures. Plant and then animal life began to die off. The dinosaurs never recovered, and mammals rose to become the dominant form of life.

Could Earth sustain life without having been hit by a dwarf planet?

6 March 2024

There are lots of ideas about how life got started on Earth, say our readers, but if an object hadn’t crashed into Earth to form the moon, as per the giant-impact hypothesis, life may not have begun