NASA chief Jared Issacman appears to be among those who support Pluto being reclassified as a planet. Could President Trump sign an executive order?

Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Planet Nine, a hypothetical, undiscovered planet in our solar system. New research now suggests the ...

Forbes contributors publish independent expert analyses and insights. I cover aerospace, astronomy & hosted The Cosmic Controversy Podcast. Sep 18, 2025, 09:28pm EDT Sep 18, 2025, 09:29pm EDT Four ...

A planetary conjunction is an astronomical event in which at least two planets – sometimes more – appear to our vantage from Earth to be close together in the sky. Both Venus and Jupiter are making ...

Four years ago, NASA purposely smashed a spacecraft into a small asteroid to see if they could deflect it—a test to prove humanity could protect Earth from threatening space rocks.

(CNN) — Sky-gazers will have the opportunity to see six planets in the sky on Saturday, weather permitting, according to NASA. This planetary parade occurs due to the alignment of the planets’ orbits ...