today in science

Remember Comet Hale-Bopp? Twenty-five years ago today – on April 1, 1997 – Comet Hale-Bopp reached its perihelion or closest point to the sun. It was slightly less than Earth’s distance from the sun at 0.9 astronomical units (Earth-sun…

Voyager 2 met Uranus on January 24, 1986. Image via NASA/JPL. Today in Science: Voyager 2 met Uranus On January 24, 1986, the Voyager 2 spacecraft swept past Uranus, the solar system’s remote 7th planet. The craft came within…