Cassini-Huygens – the Prime Mission
Saturn: magnificent rings, a planet-sized moon, and dozens of smaller moons. Three spacecraft had flown by before Cassini-Huygens was launched in 1997. But this mission wouldn't just fly by and snap some photos. It was going to get up close and personal.
The Cassini Mission to Saturn is one of NASA's best known undertakings. For nearly thirteen years it's sent images and data back from the ringed planet and its moons. But who was the Cassini who gave his name to the spacecraft?
Summer Solstice to Lammas – Quiz
Try your hand at this quiz about the summer sky, space exploration, anniversaries and astronomical events. What are some of the highlights of the time between the June solstice and the harvest festival of Lammas on August 1st?
Voyager 1 – the First Starship
Has Voyager 1 finally left the Solar System? No, that won't happen for tens of thousands of years. But it has left the bubble that the solar wind makes in space. The spacecraft is in the space between the stars, moving through a plasma made from ancient supernova explosions.
Voyager 2 - The Grand Tour
Most of our knowledge of Neptune and Uranus is based on Voyager 2's visits. Its grand tour of the four giant planets used a rare alignment of the planets that let the gravity of each one boost the spacecraft to the next one. No other probe has been to either of the ice giants.
Autumn begins on the equinox, the day the Sun crosses the equator. Equinoxes were celebrated by the earliest known civilizations, and still are in many places. One of the biggest celebrations is the Chinese Moon Festival. A traditional Chinese palace or garden has a moon-watching pavilion.
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