Planets

Exoplanets, Science, Solar System

Why don’t planets fall into the stars they orbit?

Today in the History of Astronomy

Aug. 24, 2006: Pluto is demoted

Today in the History of Astronomy

Aug. 23, 1991: Water on Mercury

Today in the History of Astronomy

June 17, 2 BCE: A conjunction between Venus and Jupiter

Today in the History of Astronomy

June 8, 1625: The birth of Giovanni Cassini

Today in the History of Astronomy

June 5, 1819: The birth of John C. Adams

Science, Solar System

How much less would you weigh on the Moon than on Earth?

Observing, The Moon, Upcoming Events

The Moon, Mars, and Jupiter meet up! This Week in Astronomy with Dave Eicher

Deep-Sky Objects, Observing, Planets

Spy two planets in the Bull: This Week in Astronomy with Dave Eicher

Observing, The Moon, Upcoming Events

The Moon, Mars, and Saturn line up: This Week in Astronomy with Dave Eicher

Observing, The Moon, Upcoming Events

The Moon meets Saturn: This Week in Astronomy with Dave Eicher

Observing, The Moon, Upcoming Events

The Moon slides by Antares: This Week in Astronomy with Dave Eicher