When a distant planet appears as a point of light in a telescope, it's hard to imagine what things are like at the surface. Does rain fall? Is the atmosphere thick, or dissipating into space? How ...

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

An international research team has discovered a new planet so young that it has yet to emerge from the womb of matter where it is forming. This is the youngest protoplanet discovered to date. It’s ...

A highly stylized rendition of our solar system NASA/JPL If someone asked which planet was closest to Earth, you’d be pretty certain — it’s Venus. We measure distances in the solar system in terms of ...

Astronomers have recently tracked a massive rogue planet, referred to as a “super-Jupiter,” that is drifting toward our solar neighborhood. This discovery has captured the attention of the scientific ...

“It was quite a surprise to find that beyond about 80 times the Earth-sun distance, the solar system suddenly ... latter and found that previous hypotheses such as Planet Nine didn’t work for their ...

Get your scrolling hand ready. An interactive web page has created a scale model of the solar system, where the moon is the size of just one pixel. Michelle Starr Science editor Michelle Starr is CNET ...

Researchers at Penn state have developed a new method for calculating the habitable zone around stars. The computer model based on new greenhouse gas databases provides a tool to better estimate which ...