Perseus and Andromeda – Quiz
An epic tale unfolds across the sky. Woven together are its strands of seduction, hubris and divine punishment, deities and monsters, and a dashing hero to rescue a damsel in distress. Nearly thirty percent of the northern sky is dedicated to the story of Perseus and Andromeda.
Neptune's Little Moons
Neptune, named for the Roman sea god, is the last planet out from the Sun, lying at the inner boundary of the Kuiper Belt. It has fourteen known moons and they're a mixed bag. One of them - Triton - represents over 99% of the total mass of Neptune moons. Thirteen little moons share what's left.
Scutum the Shield
Vienna, September 1683. For two months the city had been besieged by an army of the Ottoman Empire, and couldn't hold out much longer. But what does this have to do with astronomy? The link is the constellation Scutum (the Shield).
For six months, each day has been shorter than the last, the Sun lower in the sky. Will it disappear altogether and leave the people bereft in the dark cold winter? The winter solstice is the shortest day of the year and is associated with more festivals than any other astronomical event.
Le Gentil - Heroic Failure
Here's the story of Guillaume Le Gentil who went to India to observe the transit of Venus in 1761 and took eleven years to get home again. War and weather conspired to prevent his making observations and illness further delayed his return. Was he the unluckiest astronomer ever?
Quasar Facts for Kids
Quasars are the brightest and most distant objects in the universe. And when we see them we are looking into the past, to a time even before our Sun and Solar System existed.
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