menu
close
search
DÉCOUVRIRBIBLIOTHÈQUEMAGAZINES
CATÉGORIES
  • Art et Architecture
  • Aviation et Bateau
  • Business et Finance
  • Auto et Moto
  • Presse people
  • Comics & Manga
  • Artisanat
  • Culture et Littérature
  • Famille et Éducation
  • Mode
  • Cuisine et Vin
  • Forme et Santé
  • Maison et Jardin
  • Chasse et Pêche
  • Jeunesse
  • Luxe
  • Presse Masculine
  • Film, Télé et Musique
  • Actualité et politiques
  • Photographie
  • Science
  • Sports
  • Tech et Jeux Vidéo
  • Voyages et Plein air
  • Presse Feminine
  • Adulte
SÉLECTION DU JOUR
DÉCOUVRIRBIBLIOTHÈQUE
searchclose
shopping_cart_outlined
exit_to_app
category_outlined / Science
AstronomyAstronomy

Astronomy September 2019

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.

Pays:
United States
Langue:
English
Éditeur:
Kalmbach Publishing Co. - Magazines
Lire pluskeyboard_arrow_down
Offre spéciale : Get 40% OFF with code: BLACK40
J'ACHÈTE CE NUMÉRO
8,26 $(TVA Incluse)
JE M'ABONNE
59,28 $(TVA Incluse)
12 Numéros

DANS CE NUMÉRO

access_time2 min.
no magic required

“Life can’t be magicked into existence,” the great evolutionary biologist Richard Dawkins has said. And it doesn’t need to be. When most astronomy enthusiasts think of life in the cosmos, they immediately dream of aliens and UFOs. But statistically speaking, one might expect many worlds filled with microbes, the simplest forms of life, for every one world that might evolve life into something more complex, like on Earth. Spectroscopy tells us that chemistry works the same way everywhere in the universe. We know from meteorites that complex organic molecules are abundant in the solar system. And the particles returned in 2006 by the Stardust spacecraft from Comet Wild 2 contained glycine — the simplest amino acid and one of the fundamental building blocks of life. Experiments going back to the 1950s, when…

access_time1 min.
astronomy

Editor David J. Eicher Art Director LuAnn Williams Belter EDITORIAL Senior Editors Michael E. Bakich, Richard Talcott Production Editor Elisa R. Neckar Associate Editors Alison Klesman, Jake Parks Copy Editor Dave Lee Editorial Assistant Hailey McLaughlin ART Graphic Designer Kelly Katlaps Illustrator Roen Kelly Production Specialist Jodi Jeranek CONTRIBUTING EDITORS Bob Berman, Adam Block, Glenn F. Chaple, Jr., Martin George, Tony Hallas, Phil Harrington, Korey Haynes, Jeff Hester, Liz Kruesi, Ray Jayawardhana, Alister Ling, Steve Nadis, Stephen James O’Meara, Tom Polakis, Martin Ratcliffe, Mike D. Reynolds, Sheldon Reynolds, Erika Rix, Raymond Shubinski SCIENCE GROUP Executive Editor Becky Lang Design Director Dan Bishop EDITORIAL ADVISORY BOARD Buzz Aldrin, Marcia Bartusiak, Timothy Ferris, Alex Filippenko, Adam Frank, John S. Gallagher lll, Daniel W. E. Green, William K. Hartmann, Paul Hodge, Edward Kolb, Stephen P. Maran, Brian May, S. Alan Stern, James Trefil Kalmbach Media Chief Executive Officer Dan Hickey Senior Vice President, Finance…

access_time2 min.
astro letters

Debunking COSTAR It was with great interest that I read Jeff Hester’s column in the May issue regarding the overhyped role of COSTAR in saving the Hubble Space Telescope from eternal scorn and ridicule. The NOVA episode mentioned in his column certainly did imply that COSTAR was almost single-handedly responsible for saving Hubble. While COSTAR did play an important role, and Jeff does give some credit to it, COSTAR was completely removed from Hubble in the final shuttle servicing mission in 2009. All optical corrections have since been done by other equipment, making COSTAR obsolete and putting its contributions to science since 2009 at about zero. Regardless, I think most people can agree that Hubble has truly become, through the efforts of many different individuals, one of the most valuable instruments ever…

access_time1 min.
stunning spiral

Like most galaxies, NGC 2903 hides a dark secret: a supermassive black hole at its core. The inner regions of the spiral galaxy serve as the focal point for this image, taken with the Hubble Space Telescope as part of a survey to better understand how such supermassive black holes influence the gas, dust, and stars that lie in the center of the galaxy around them. NGC 2903, which sits about 30 million light-years from Earth in the constellation Leo the Lion, is intriguing because its central regions are forming stars at a more rapid rate than average, leading researchers to wonder about the cause. In addition to its glowing, elongated center, the galaxy also shows off bright star-forming regions and dark lanes of interstellar dust in this close-up view. ESA/HUBBLE…

access_time1 min.
hot bytes

LUNAR GOALS On May 13, NASA announced the Artemis program will return humans to the Moon by 2024, requesting an initial $1.6 billion to jump-start the project. POWER SOURCE Scientists have finally discovered the source of the glowing STEVE phenomenon: heated charged particles in the upper atmosphere. The effect is akin to a glowing lightbulb. NEW SIGNALS LIGO and VIRGO spotted gravitational waves from two colliding neutron stars for the second time April 25. One day later, they recorded gravitational waves that researchers think may be from a neutron star colliding with a black hole.…

access_time3 min.
hubble confirms universe’s fast expansion rate

Scientists know the universe is expanding. But there’s a conundrum: Studies of the early universe to derive the expansion rate, called the Hubble constant or H, don’t mesh with measurements of the universe today. Instead, observations suggest it is expanding about 9 percent faster than the theoretical value obtained from the early universe. There are two ways to determine how fast the universe is expanding. One is to use measurements of conditions in the very early universe to calculate the expansion rate, based on cosmological models. The other is to measure directly how quickly objects are receding from our position. Based on previous measurements, astronomers believed there was a 1 in 3,000 chance that the calculated and measured expansion rates don’t actually disagree. (That is, there was a 1 in 3,000…

help