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

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

According to NASA, four to five planets being visible across the sky at the same time happens only once every few years.

James Webb Space Telescope captures HH 30’s disc, revealing dust movement, jets, and planetary formation processes.

ASTRONOMERS may have just found the fastest exoplanet system in the galaxy – a super-Neptune world orbiting a hypervelocity star. The pair are thought to be moving at roughly 1.2million mph.

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

Beyond the immediate impact damage, an asteroid impact would have long-lasting effects on Earth's atmosphere. What would ...

Welcome to this month’s edition of “What’s up in the sky?” February has a nice lineup of planets and some eye-catching ...

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter " — in 2016, but have continued to investigate this ...

Our modern era of space observation and exploration deepens our connection with the universe—and with each other. When NASA ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

This week sees a special stargazing event, as as up to six planets will be visible in a line in the night sky.