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Henrietta Swan Leavitt
Henrietta Leavitt isn't a well known name, but a century ago she made one of the most important discoveries of 20th century astronomy. Previously, astronomers could only measure distances up to 100 light years, but her work extended that to 10 million light years.
Herschel Museum of Astronomy
In 1781 William Herschel was the first person in history to discover a new planet. He was observing in the back garden of his home in Bath, England. The house where history was made is a museum and its new Caroline Lucretia Gallery is named for William's sister, the first woman to discover a comet.
Herschel Partnership - for Kids
The Herschels were the greatest astronomical family of all time. A partnership of two brothers and a sister built the best telescopes of their time, and with those telescopes mapped the deep sky. They changed the way astronomers understood the heavens.
Hidden Universe 3D – film
Hidden things intrigue, fire the imagination, and move us to uncover them. In "Hidden Universe 3D" you can see what powerful technology has made visible. And you can see it in 3D on a giant screen. A wonderful experience.
How Big Are the Biggest Stars
What is the biggest star yet discovered? It's harder than you might think to answer this question. But here's a short tour of big, bigger and absolutely enormous stars - including some impossible ones.
How the Sun Was Born – Facts for Kids
The Sun didn't exist five billion years ago. But the material to make it did. There was even enough to make a number of stars and still have material left over for planets, moons and other small bodies. What was this material, and how did it end up as stars and planets?
How to Tell a Planet from a UFO
Two English policemen chased a UFO through the Devon countryside. It was the planet Venus. A news reporter had quite a scoop when she found a UFO hovering over New York City. It was the planet Jupiter. Why are planets and stars often mistaken for spacecraft or aircraft?
Hubble 3D - film review
For over two decades a special telescope has given us breath-taking views of the cosmos. The Hubble Space Telescope has lasted this long through servicing by space shuttle astronauts, but the final mission is over. This IMAX film is a tribute to the iconic instrument - is there a theater near you?
Hurtigruten - Hunting the Light
Imagine a three thousand-mile astronomy voyage “hunting the light”. Usually, astronomers avoid the light, but not when it's the aurora borealis, the famed northern lights. Here is the first of two articles about the Norwegian ships that carry cargo and people between the towns of the Arctic Circle.
Hurtigruten - Seeing the Northern Lights
What would it be like to take an astronomy tour on the Hurtigruten? Here is an account of some of the highlights of a trip around the coast of Norway in search of the northern lights. We heard stories of the constellations and then found them in the sky. And one night we saw the aurora dancing.
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