Using the Kepler space telescope, the agency had discovered an exoplanet the size of Earth located in the habitable zone of another star. The planet was the first of a similar size to Earth ...

Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies these rocky, or "terrestrial," worlds are far more common than was suspected ...

K2-18b is a whopping 8.6 times bigger than Earth. The planet’s large size – with a radius 2.6 times that of Earth – means that the planet’s interior likely contains a large mantle of high ...

With its beautiful rings, Saturn may be the most stunning planet in the solar system. It is the sixth planet from the sun and ...

However, at least 100 tons of dust-size space rock rains down on the Earth every day, increasing the size of our planet bit by bit. The Earth also collides with space rocks, called meteors, that show ...

Kosmos-482, a spacecraft bound for Venus in 1972, was a time capsule from the Cold War when superpowers had broad ambitions ...

Neptune, TOI-270 d provides a critical opportunity to understand atmospheric composition and planetary evolution in a ...

This planet is part of a larger sample that ... An illustration showing a rough size comparison between Earth, a super-Earth, and a Neptune-size gas giant. | Credit: Robert Lea (created with ...