For the first time, astronomers have witnessed the early stages of planet formation around a distant young star, HOPS-315, ...

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 ...

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 ...

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 ...

Siraj’s Planet Y search started about a year ago when he was trying to find out whether the shape of the Kuiper Belt is flat.

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 ...

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 ...