Compare Mars and Earth in size, atmosphere, gravity, and potential for life. Discover their differences and shared traits. Explore the mysteries of the Red Planet!

Volcanic planets with static crusts, called Ignan Earths, can maintain liquid oceans and temperate climates favorable to life.

In late June, we hosted this year's second Ars Live event, a conversation with climate scientist Zeke Hausfather, who holds ...

Scientists have long agreed this event was triggered by a sudden surge in greenhouse gases which resulted in an intense and ...

In a groundbreaking discovery, astronomers have identified TOI-1846 b, a super-Earth exoplanet located 154 light-years away.

The slightly warmer temperatures around the middle of the Earth melted the top layers of ice to form meltwater ponds that ...