Astronomy May 2021

The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more! All this in a user-friendly style that's perfect for astronomers at any level.

País:
United States
Língua:
English
Editora:
Kalmbach Publishing Co. - Magazines
Periodicidade:
Monthly
6,28 €(IVA Incl.)
40,40 €(IVA Incl.)
12 Edições

nesta edição

2 minutos
can we travel to the stars?

Follow the Dave’s Universe blog: www.Astronomy.com/davesuniverse Follow Dave Eicher on Twitter: @deicherstar As long as our ancestors have looked skyward, humans have dreamed about traveling to the stars. For hundreds of years, as the notion of what stars really are began to crystallize, the dreams persisted, eventually making their way into our literature and film. A century and a half ago, Jules Verne penned From the Earth to the Moon; some 30 years later, the French filmmaker Georges Méliès created the wonderful short A Trip to the Moon, in which poor Mr. Moon gets struck in the eye with a projectile. In the wake of the Apollo Moon missions, now half a century ago, would-be astronauts have toyed with not only returning to our close celestial neighbor, or pushing on to Mars,…

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2 minutos
astro letters

Splash down stamp Katrin Raynor-Evans’ November 2020 article, “Collect the cosmos in stamps,” reminded me of something I found a few years ago while cleaning out my father’s garage. I took home a toolchest and was looking through it when I found an envelope. The stamp on the envelope cost $0.04 and was made for the Project Mercury program going on at that time. Of interest is the postmark canceling the stamp: The postmark is for the Cape Canaveral post office, but Canaveral didn’t have a post office at that time. This is a special postmark issued by the United States Postal Service to mark the successful splash landing. My father says he has no idea how he ended up with this envelope and thinks it might have been in the…

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2 minutos
when worlds collide

The universe is a sea of seemingly empty space. Yet, despite its vastness, galaxies still frequently slam into each other in gravitational death dances. The Hubble Space Telescope captured six such merging systems in these images. But galactic collisions don’t just make for pretty pictures; researchers also use them to understand the evolution of galaxies throughout the universe. When galaxies combine, their shapes are distorted and their contents rearranged. This forges a new generation of stars in an event called a starburst. And the star clusters created in these mash-ups become long-lasting witnesses to their galaxies’ dramatic transformations. Researchers used Hubble to study the ages, masses, and amount of dust within these galaxies’ new star clusters as part of a survey called the Hubble imaging Probe of Extreme Environments and Clusters. The…

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4 minutos
success! nasa safely lands perseverance on mars

NASA’s Perseverance rover is safe and sound on Mars. At approximately 3:55 p.m. EST on Thursday, Feb. 18, 2021, mission control at NASA’s Jet Propulsion Lab in Pasadena, California, erupted in jubilation upon receiving confirmation that their latest interplanetary rover made it to the martian surface unscathed, completing a seven-month, 293-millionmile (471 million kilometers) journey. NASA couldn’t have asked for a better landing. In a post-landing press conference, Thomas Zurbuchen, head of NASA’s science missions, said, “Every time we do a launch or do a landing, we get two plans. One plan is the one we want to do. And then there’s that second plan, which is right here — that’s the contingency plan.” Zurbuchen then stood up, lifted a thin stack of lightly leafed-through papers into the air, and triumphantly tore them…

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1 minutos
quick takes

EVER-CLEAR SKIES Hubble Space Telescope observations of the hot Jupiter WASP-62b revealed that it has no observable clouds or haze in its atmosphere. It’s the second known exoplanet with completely clear skies. GALACTIC GEYSER Astronomers have found that the core of galaxy ESO 253–3 regularly erupts in a flare about every 114 days. This reliable nature allowed scientists to plan ahead and observe several flares in 2020 with multiple telescopes, including NASA’s Neil Gehrels Swift Observatory. UNEXPECTED LIGHT The New Horizons probe, currently exploring the Kuiper Belt, has found that empty space is not as dark as expected. The extra light could mean there are more faint galaxies than theory predicts, creating a brighter background glow. FALSE-PHINE? The debate over a claimed detection of phosphine in Venus’ atmosphere — a potential indicator of microbial life — continues…

3 minutos
astronomers find the youngest, fastest-spinning magnetar yet

Fresh observations are shedding more light on the newest member of the bizarre class of stars called magnetars — and astronomers are running out of superlatives to describe it. Neutron stars are ultradense objects — second only to black holes — that compress more than a Sun’s worth of mass into a sphere only about as wide as Manhattan. And magnetars are a rare subset of neutron stars that sport the universe’s most powerful magnetic fields — roughly 1 million billion times stronger than that of Earth. However, astronomers have only identified 31 magnetars out of the 3,000 or so known neutron stars. After the discovery of the newest member, Swift J1818.0-1607 (J1818 for short), by NASA’s Neil Gehrels Swift Observatory in March of last year, researchers were eager to observe it…

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