Just decades after the first exoplanets were identified, our database of the distant worlds—monitored by the NASA Exoplanet Science Institute—has breached a new threshold. Now, astronomers have ...

"We found that some comets in the inner Oort cloud form a long-lasting spiral structure." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Spirals ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

This planet, located about 700 light-years from Earth, is known for its remarkably short orbital period and extreme surface temperature. It orbits closely around its star, with an orbital radius only ...

Asteroid ‘Families’ Reveal Hidden Histories and Impact Risks across the Solar System ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Our solar system has been around for 4.6 billion years. While that sounds like a long time, it's ...

This story sounds wild—even incredible. Black holes! Dark matter! Jostling planets! Yet the scenario is plausible—and testable soon. Black holes the size of an atom that contain the mass of an ...