The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The planets in our solar system orbit the sun essentially along a line across the sky in a plane called the ecliptic. For that reason, planets in our Earthly sky always appear somewhere along a ...

"An asteroid this size impacts Earth on average every few thousand years and could cause severe damage to a local region," ...

Dr David Whitehouse said the measure could be taken against a space rock the size of a football pitch which is being monitored by the European Space Agency (ESA) and could strike the planet in a ...

Data collected by NASA's InSight lander suggest that ancient internal processes are responsible for the "Martian dichotomy" ...

An object we thought belonged to the most common category of planet in the galaxy has turned out to be something we've never seen before.

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving ... Here’s how it works. A planet-size object that possibly ...

The climate on such a world must be beyond bizarre. A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away. The planet, known as HD ...

Phone sizes vary across brands, and Apple’s approach to the size of its phones has varied massively. For a broader overview of how iPhones compare to other brands’ phones, check out our dedicated ...

Six planets will be visible together in a rare 'planet parade' starting Jan. 21 Athena Sobhan is a Digital News Writer at PEOPLE since 2024. Her work has previously appeared in POPSUGAR, EUPHORIA ...

YR4 is circling Earth and NASA predicts it could strike the planet in 2032. Here's what to know about the asteroid headed ...

The Earth-size planet with eternal night Not all Earth-size planets are lucky enough to be habitable. Take SPECULOOS-3 b, a rocky, Earth-like world whose orbit ... by comparison, is 4.6 billion ...