Planet formation around HL Tau, 450 light years from Earth
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View ArticlePlanet formation around HL Tau, 450 light years from Earth
@nixiebunny wrote: This image is from an array of RADIO telescopes! ALMA is a billion-dollar, international astronomy project consisting of about 50 40-foot diameter radio telescopes in Chile. They...
View ArticlePlanet formation around HL Tau, 450 light years from Earth
@SpunkyTWS wrote: Only 450 light years from Earth sounds to me like we're seeing it more or less as it is. I'm assuming planetary accretion takes millions or even billions of years. This will be a...
View ArticlePlanet formation around HL Tau, 450 light years from Earth
@nixiebunny wrote: Yes, this is a much younger solar system that ours. The ALMA folks ought to be able to take more pictures of other systems in various stages of development, now that they have shown...
View ArticlePlanet formation around HL Tau, 450 light years from Earth
@wrecksdart wrote: Is it just me, or are radio telescopes pretty simple devices in that they simply aim at a particular point in the sky and collect the various frequencies passing by? They don't...
View ArticlePlanet formation around HL Tau, 450 light years from Earth
@nixiebunny wrote: Radio telescopes tend to be simpler than optical telescopes, as the antenna doesn't need to be nearly as flat as an optical mirror. We do have roomfuls of electronics to process the...
View ArticlePlanet formation around HL Tau, 450 light years from Earth
@justins wrote: Very cool! Link to original BBC article (missing from the post?) http://www.bbc.com/news/science-environment-29932609 Read full topic
View ArticlePlanet formation around HL Tau, 450 light years from Earth
@LDoBe wrote: That's what I was thinking. At the relatively low frequency of radio waves that these telescopes observe, the atmosphere is pretty close to completely transparent. What I would like to...
View ArticlePlanet formation around HL Tau, 450 light years from Earth
@nixiebunny wrote: The only atmospheric problems we get are from either water, which absorbs the signal and is why ALMA is at 15,000 feet ASL, or oxygen or ozone lines that render a few frequencies...
View ArticlePlanet formation around HL Tau, 450 light years from Earth
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