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ESA/Planck Collaboration
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Gravitational waves remain elusive, according to Planck
Despite earlier reports of a possible detection, a joint analysis of data from the European Space Agency's (ESA) Planck satellite and the ground-based BICEP2 and Keck Array experiments has found no conclusive evidence of primordial gravitational waves. The universe began about 13.8 billion years ago and evolved from an extremely hot, dense, and uniform state to the rich and complex cosmos of galaxies, stars, and planets we see today. An extraordinary source of information about the universe’s history is the cosmic microwave background (CMB), the legacy of light emitted only 380,000 years after the Big Bang. ESA’s Planck satellite observed this background across the whole sky with unprecedented accuracy, and a broad variety of new findings about the early universe has already been revealed over the past two years. Read more. |
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Astronomy: Roen Kelly
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Jupiter shines brightest in February
Our solar system’s largest planet hits opposition this month, making it a perfect target for the long winter nights. Read more. |
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Astronomy: Chuck Braasch and Roen Kelly
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To celebrate the magazine's 500th issue, the editors ofAstronomy have dedicated 52 pages to what they think are the 500 coolest things about space. From historical milestones to recent discoveries, from objects here in our solar system to those at the far reaches of the universe, from manned spaceflight to robotic explorers, this special issue covers it all.
Readers also can share which of the 500 is their favorite anecdote for a chance to win a Celestron telescope with the Coolest Space Facts Contest. Learn more. |
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Issue Preview
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Editor David J. Eicher shares highlights from the March issue. Watch now. |
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Observing podcast: Double star ADS 5951, open cluster NGC 2360, and irregular galaxy NGC 2366, by Michael E. Bakich, senior editor Dave’s Universe: Jeff Hester to write monthly science column inAstronomy magazine, by David J. Eicher, editor Blogs from the Local Group: Enter the Coolest Space Facts Contest, by Karri Ferron, production editor Star Clusters Gallery: M35 and NGC 2158 -- Behyar Bakhshandeh captured this image January 17, 2015, from the Anza-Borrego Desert in California. NEW Video: The Real Reality Show: Why Asteroids Should Be Taken Seriously, with David J. Eicher, editor The Sky this Week: A daily digest of upcoming celestial events, by Richard Talcott, senior editor The Sky this Month: Jupiter shines brilliantly
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