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Found 674 results for dwarf planet

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

Weird floating crystals can stop stars ageing for billions of years

6 March 2024

Some white dwarfs seem to stop ageing for billions of years, and this may be due to the behaviour of unusual ice crystals that heat up the stars

JWST will officially begin searching for exomoons around other planets

5 March 2024

Five exomoon programmes have been picked for the James Webb Space Telescope, raising the hopes of finding moons around exoplanets for the first time

Why space dust is key to everything from star birth to life on Earth

1 March 2024

Cosmic dust grains may be small, but they are mighty – it turns out dust is crucial to just about every process that occurs in space

Weird white dwarf star has a metal scar after eating a planet

26 February 2024

Astronomers have spotted a white dwarf star with a patch of metal near one of its magnetic poles, which probably formed when the star devoured a small planet

earth and sunbeam in galaxy space element finished by nasa; Shutterstock ID 280760417; purchase_order: -; job: -; client: -; other: -

How heavy is Earth and how much weight could it take before caving in?

14 February 2024

Earth’s mass is about 6 million million million million kilograms, say our readers – and it wouldn’t be a great idea to be in the vicinity if too much mass were added