It is difficult to look at this Hubble Space Telescope image of the nebula NGC 2467 without thinking about what it would be like to fly through it. It is easy to imagine floating through a beautiful softly glowing mist, something like the Mutara Nebula, scene of Kirk and Spock’s Read more…
Imagine that once the Sun sets, rather than a dark sky sprinkled with a few thousand dim stars, we had a sky blazing with ten thousand or so stars blazing brighter than Venus. How different would astronomy, mythology, everyday life be? Planets orbiting stars in the NGC 3603 Young Cluster Read more…
Here’s how rainbows are made. Some 13.7 billion years ago, a mere millionth of a second after the Big Bang, the first hydrogen and helium nuclei condensed out of a hot, dense soup of quarks and gluons. It took another 380 000 years or so for conditions in the ancient Read more…
That amazing instrument, the Hubble Space Telescope (HST), has just celebrated its twentieth anniversary since it was placed in orbit. Since then, (after a rocky start, remember that dodgy mirror?) it has revolutionised not only what we know about cosmology, star formation, exoplanets and so on, but also how we Read more…
At first glance Gliese 710 is not a very distinguished star. A K7 class orange dwarf a bit more than half as massive as the Sun, it currently lies about 63 light years from us in the constellation Serpens. It is moving fast though and that is why one reason Read more…
Around this time of year, go outside after 9pm on a clear night and look at the sky. Even if it is not quite dark a bright star will be visible in the south. This is Vega, the third brightest star in our sky (only Sirius and Arcturus are brighter). Read more…
About 490 light years from our planet in the constellation of Monoceros lies a G type star designated COROT-7. A little smaller and dimmer than our Sun, this star is circled by at least two planets, one of which, COROT-7b, is the most similar exoplanet to Earth yet discovered. Read more…
Some 150 light years from Earth in the constellation of Pegasus lies the star HD 209458 and its planetary system. The star is almost a clone of our own Sun, but one its planets is completely unlike anything in our Solar System. The exoplanet HD 209458b has a mass more Read more…
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