Astronomers have spotted two mini-Neptune exoplanets that are losing their puffy atmospheres, in the process possibly transforming into super-Earths. Radiation from the planets' parent stars is ...

The European Space Agency (ESA)’s CHEOPS satellite has discovered four new exoplanets — and they are a hard-to-detect type called a mini-Neptune. These planets are notable because they are the ...

When astronomers look at planets outside our solar system, called exoplanets, often they have only minimal information they can use to classify them. Two key factors they often do know are the planets ...

The morning of April 24 will give rise to a striking mini-planetary parade, as Mercury, Venus, Saturn, Neptune, and Earth's moon cluster together in the same region of the pre-dawn sky, making for a ...

The James Webb Space Telescope (JWST) has identified half a dozen free-floating planets wandering alone in the Perseus Molecular Cloud. The other means of forming planets is top-down, which describes ...

Astronomers have discovered four worlds unlike anything in our own solar system that provide a "missing link" between Earth twins and Neptune-like planets, they say. Scientists are interested in mini ...

WASHINGTON >> Astronomers may have caught a relatively nearby star munching on a planet or mini-planets. A NASA space telescope noticed that the star suddenly started looking a bit strange last year.

Observations of 1 Ceres, the largest known asteroid, have revealed that the object may be a “mini planet,” and may contain large amounts of pure water ice beneath its surface. The observations by NASA ...