Earth

Solar System

If a planet-killing asteroid threatens Earth, these astronomers have a plan

Cosmology, Solar System

Earth Is spinning faster now than it was 50 years ago

Solar System

Exoplanet Earth: What our world tells us about the cosmos

Solar System

Earth’s equatorial bulge shapes the planet’s physics

Solar System, The Moon

Henson Crater: Lunar impact site named for Arctic explorer

Solar System

When north goes south: Is Earth’s magnetic field flipping?

Robotic Spaceflight, Solar System

Ask Astro: How did Earth’s gravity capture (then lose) a 50-year-old rocket booster?

Observing

Ask Astro: Why do we have meteor showers every year?

Solar System

Earth’s inner core is growing lopsided

Solar System

Earth’s energy budget is out of balance

Solar System

Our planet’s changing orbit helped life survive ‘Snowball Earth’

Solar System, The Moon

Did the Moon once have a long-lived magnetic field? New research resolves the mystery.