category_outlined / Wissenschaft

Astronomy November 2018

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.

United States
Kalmbach Publishing Co. - Magazines
Mehr lesenkeyboard_arrow_down
CHF 43.80
12 Ausgaben


access_time2 Min.
take a trip with us

As part of the 2019 solar eclipse tour to Chile and Peru, Astronomy’s travelers will visit the famous and ethereal site Machu Picchu, an icon of Inca civilization. (VITMARK/DREAMSTIME)Talk to any astronomer about the job, and they’ll invariably tell you that travel is an exciting part of it. Observatories get built on mountaintops in exotic locations for a reason — the great seeing and transparency — so visiting astronomical sites takes you to some pretty cool places in the world.We take pride in partnering with TravelQuest International, an experienced touring company based in Arizona that handles our trip logistics. On our tours, editors travel with you to provide guidance and astronomical expertise. Why not join us on one of our upcoming journeys?We currently offer several exciting options. In February 2019,…

access_time2 Min.
astro letters

(GREGG RUPPEL)Faint Mizar BA thank you to Phil Harrington for writing his enjoyable and informative Binocular Universe columns in Astronomy. Unfortunately, there’s an error in the caption of the photo of Alcor and Mizar on p. 68 of the June 2018 issue. That caption says, “Alcor is the fainter star between and just below the brighter twin suns of Mizar A and B.” In fact, Mizar and Alcor are the brighter two of the three stars visible in the image, as those two represent an optical double.— Scott Satko, Lewisville, NCAstronomy respondsYes, the editors apologize for the mislabeled caption.Tributes to Lucy and her discovererI quite enjoyed reading Joel Davis’ “Exploring Jupiter’s Trojan Asteroids” article in the June 2018 issue. I serve on the board of the Institute of Human Origins…

access_time1 Min.
supermassive start

South Africa’s Department of Science and Technology’s long-awaited MeerKAT radio telescope is officially operating after a decade of construction. During its inauguration July 13, MeerKAT showcased a sample of its impressive capabilities: a stunning panoramic view of the area surrounding the Milky Way’s central supermassive black hole, Sagittarius A*.MeerKAT used its 64 antennas to capture this incredibly detailed radio image, which covers an area of about 1,000 by 500 light-years. Built in the Karoo region of the Northern Cape and operated by scientists at the South African Radio Astronomy Observatory, the telescope can penetrate the thick clouds of gas and dust that encompass the black hole, picking up radio emission that is invisible to visible-light telescopes.MeerKAT researchers now plan to use the telescope’s unprecedented image quality to dissect the black…

access_time3 Min.
all objects, even stars, fall the same way

TEST BED.The triple-star system PSR J0337+1715, shown in this artist’s impression, is a unique place to test gravity based on predictions made by Einstein’s theory of relativity. PSR J0337+1715 contains a neutron star (right) orbiting a white dwarf (left); the pair orbits a second, more distant white dwarf (upper left).The equivalence principle states that all objects should fall the same way, regardless of mass. The principle has been tested time and again — and passed with flying colors — on Earth. It’s even been tested on the Moon, when Apollo 15 astronaut David Scott dropped a hammer and a feather from the same height. The two objects reached the lunar surface at the same time.Einstein’s theory of general relativity takes this concept a step further. It assumes the strong equivalence…

access_time1 Min.
mercury’s grand view

(ASTRONOMY: ROEN KELLY)TWIN PLANETS. Earthbound skywatchers get to see Mercury low in the southwest after sunset November 6, when it reaches greatest elongation. But have you ever wondered what the night sky would look like from Mercury? Although the stars would all look the same, the planets would appear strikingly different. From the inner world on November 6, Venus and Earth would look almost like twins, dazzling gems set against the backdrop of Taurus the Bull.FAST FACTFrom Mercury, Venus would gleam at magnitude –5.3, nearly four times brighter than magnitude –3.9 Earth.…

access_time2 Min.
lake of liquid water found on mars

DEEP RED SEA.The European Space Agency’s Mars Express orbiter captured this image of the planet’s south polar cap and Hellas basin. Scientists recently discovered a 12-mile-long subsurface lake in this region. (ESA/DLR/FU BERLIN)Astronomers have announced the discovery of a large underground lake of liquid water lurking just below Mars’ surface. The newfound lake stretches some 12 miles (19 kilometers) from end to end. It was discovered using a radar instrument called Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) on board the European Space Agency’s Mars Express spacecraft, which reached Mars nearly 15 years ago. The results were published August 3 in the journal Science.“This is just one small study area,” said lead author Roberto Orosei, who is also principal investigator of the MARSIS experiment, in a press release.…