When I tell people I majored in astronomy, the general reaction is one of shock and awe. Although people don't realize just how much physics it is (which scares them even more when they found out), they're still impressed that anyone would choose to major in a physical science. Quite often, I'm asked the question, [...]
I've had a couple of people excitedly show me the Star Walk astronomy app on their iPhones and ipads, and it really is great. You can hold your device up to the sky and it will show you a sky map of your exact position. Move your device around the sky, and it moves with [...]
For years, astronomers have seen evidence that – at least in our own local neighborhood — spiral galaxies are consuming smaller dwarf galaxies. As they are digested, these dwarf galaxies are severely distorted, forming structures like strange, looping tendrils and stellar streams that surround the cannibalistic spirals. But now, for the first time, a new [...]
The Hubble Space Telescope’s Advanced Camera for Surveys has captured a remarkable image of a spiral in space. No, not a spiral galaxy, (and not another Norway Spiral!) but the formation of an unusual pre-planetary nebula in one of the most perfect geometrical spirals ever seen. The nebula, called IRAS 23166+1655, is forming around the [...]
There’s something strange going on around the red giant star CW Leonis (a.k.a. IRC+10216). Deep within the star’s carbon-rich veil, astronomers have detected water vapor where no water should be. CW Leonis is similar in mass to the sun, but much older and much larger. It is the nearest red giant to the sun, and [...]
Scientists at the European Southern Observatory have identified the closest looking solar system to our own. They located a sun-like star more than 100 light years distant with as many as seven different planets, including one that might be the smallest ever found outside the solar system. (...)Read the rest of Step On The Scales: [...]
We truly live in an amazing time for exoplanet research. It was only 18 years ago the first planet outside our solar system was discovered. Fifteen since the first confirmation of one around a main sequence star. Even more recently, direct images have begun to sprout up, as well as the first spectra of the [...]
Arthur C Clarke allegedly said that the space elevator would be built fifty years after people stopped laughing. The first space tower though… well, that might need a hundred years. The idea of raising a structure from the ground up to 100 kilometers in height seems more than a bit implausible by today's engineering standards, [...]
Often in astronomy, one observable property traces another property which may be more difficult to observe directly; X-ray activity on stars can be used to trace turbulent heating of the photosphere. CO is used to trace cold H2. Sometimes these correlations make sense. Activities in stars produce the X-ray emissions. Other times, the tracer seems [...]
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- a community of amateur astronomers from all over the world
We share ideas, astronomy news and observation stories, exchange hints and tips with other enthusiasts and generally keep in touch with one another and the world of amateur astronomy.
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