galaxies

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Away from the Sun, into the vast darkness

In the seventies the Voyagers and Pioneers took off on an endless trip. The Voyagers would pass Jupiter, Saturn, Uranus and Neptune. Voyager 1 is now the most distant spacecraft. It’s about 100 Astronomical Units…


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Herschell multipurpose space observatory

Next year a multipurpose space observatory will be launched by ESA, the Herschell. "Herschel, a multi purpose space observatory, is scheduled to launch in 2008, in a dual configuration with ESA’s cosmic microwave background mission,…


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The incredible shrinking galaxy

When measuring the distance of an object, you can use the principle of parallax. The movement of the object against a fixed background gives you an easy way to calculate the distance. That’s how people…



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‘Bout Bulges

How’s your central bulge doing these days? Does it come from a merger – say a pregnancy – or has it evolved on its own? Well, either of you, you’re not alone in the galaxy….


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Doing a Black Hole Dance

Both APOD and Sky and Telescope ran a story on the black hole that’s supposedly in the center of our own Milky Way, although with these pictures "supposedly" sounds a little shallow. Live from the…


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Hobbits in Space

Everything in the universe comes in formats small, intermediate and large. Even galaxies. Quite recent discoveries are hobbit galaxies.One of them is only 1200 ligthyears across, yet is still producing new young stars. An intriguing…