Category: Space

SpaceX Preparing to Begin Starship Hopper Tests

THE WOODLANDS, Texas — SpaceX could begin initial tests of a prototype of the company’s next-generation Starship vehicle as soon as this week, Elon Musk said March 17. In a series of tweets, Musk said flights of a “hopper” test vehicle, powered by a single Raptor engine, would “hopefully” begin this week pending work to […]

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Why Easter 2019 Could Have Been in March

Wednesday (March 20) brings us the first full moon of the new spring season. The official moment that the moon will turn full is 9:43 p.m. Eastern Daylight Time. Just 3 hours and 45 minutes earlier, the vernal equinox — the official start of astronomical spring — will occur.  The first full moon of spring […]

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How Did We Figure Out Atoms Exist?

Paul M. Sutter is an astrophysicist at The Ohio State University, host of “Ask a Spaceman“ and “Space Radio,” and author of “Your Place in the Universe” (Prometheus Books, 2018). Sutter contributed this article to Space.com’s Expert Voices: Op-Ed & Insights. In 1808, chemist John Dalton developed a very persuasive argument that led to an amazing […]

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Comet 21P Crosses Paths with a Star Cluster in Sparkling Deep-Space Image

Miguel Claro is a professional photographer, author and science communicator based in Lisbon, Portugal, who creates spectacular images of the night sky. As a European Southern Observatory photo ambassador, a member of The World At Night and the official astrophotographer of the Dark Sky Alqueva Reserve, he specializes in astronomical “skyscapes” that connect Earth and the night sky. Join Miguel […]

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Does Light Experience Time? And Other Riddles.

Paul M. Sutter is an astrophysicist at The Ohio State University, host of Ask a Spaceman and Space Radio, and author of Your Place in the Universe. Sutter contributed this article to Space.com’s Expert Voices: Op-Ed & Insights. We don’t understand the concept of time much at all.  Everyone experiences time — literally every day — […]

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Era of Big NASA Space Telescopes May Be Ending

The $8.9 billion James Webb Space Telescope may be the last big-budget observatory that NASA launches for a while. The White House’s proposed 2020 budget cancels the Wide-Field Infrared Survey Telescope (WFIRST), a $3.2 billion space mission viewed as a linchpin of astrophysics research through the 2020s and beyond.  And that budget keeps NASA’s astrophysics […]

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CHIME: Mapping the Early Universe

As the young universe settled into its current form, flip-flopping hydrogen atoms fired off countless flashes of light — all at the same wavelength of about half the height of a bowling pin. Eons later, those photons have been stretched to varying lengths by the expanding cosmos and some have found their way to Canada, […]

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