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Astronomy Picture of the Day - January 27, 2014Source: From the Northern to the Southern CrossPhotographer: Nicholas Buer
spaceexplorationphotography: The constellation of Orion.Source: http://apod.nasa.gov/apod/image/1604/OrionRedBlue_Lindemann_1500.jpg
pennyfornasa: An exploding meteor captured against the Milky Way on July 23, 2015 from Vandans, Austria. http://apod.nasa.gov/apod/ap150812.htmlWatch a replay of the Perseid meteor shower here: http://www.penny4nasa.org/2015/08/12/watch-the-perseid-meteo
jockohomo: APOD, Asperatus Clouds Over New Zealand - “What kind of clouds are these? Although their cause is presently unknown, such unusual atmospheric structures, as menacing as they might seem, do not appear to be harbingers of meteorological doom.
fyeahastropics: Unexplained Dimmings in KIC 8462852(via APOD; Illustration Credit: NASA, JPL-Caltech ) Why does star KIC 8462852 keep wavering? Nobody knows. A star somewhat similar to our Sun, KIC 8462852 was one of many distant stars being
via apod.nasa.gov something cosmic On Valentine’s Day (ET) the Sun unleashed one of its most powerful explosions, an X-class flare. The blast was the largest so far in the new solar cycle. Erupting from active region AR1158 in the Sun’s
schmidt-cassegrain: Lagoon nebula (pink), Mars (orange, underneath), and Trifid nebula (blue/pink, to the right), NASA APOD, 25 December 2014. Click here for pretty 13MB resolution version.
astrowhat: APOD: 10 years of the Perseid meteor shower.
traverse-our-universe:Proxima Centauri, the closest star to our very own sun, is nestled in the Alpha Centauri star system. Read more at APOD/NASA; credit: ESA/Hubble & NASA
wonders-of-the-cosmos: 1901 Photograph: The Orion Nebula (apod)
M57: The Ring Nebula Except for the rings of Saturn, the Ring Nebula (M57) is probably the most famous celestial band. Its classic appearance is understood to be due to our own perspective, though. The recent mapping of the expanding nebula's 3-D
NGC 7635: The Bubble Nebula Image Credit: NASA, ESA, Hubble Heritage Team - Reprocessing by Maksim Kakitsev Explanation: Blown by the wind from a massive star, this interstellar apparition has a surprisingly familiar shape. Cataloged as NGC 7635, it
TESS Launch Close Up Image Credit & Copyright: John Kraus Explanation: NASA’s Transiting Exoplanet Survey Satellite (TESS) began its search for planets orbiting other stars by leaving planet Earth on April 18. The exoplanet hunter rode to orbit
Meteor Over Crater Lake Image Credit & Copyright: Brad Goldpaint (Goldpaint Photography) Explanation: Did you see it? One of the more common questions during a meteor shower occurs because the time it takes for a meteor to flash is typically less
The Blue Horsehead Nebula in Infrared Image Credit: WISE, IRSA, NASA; Processing & Copyright : Francesco Antonucci Explanation: The Blue Horsehead Nebula looks quite different in infrared light. In visible light, the reflecting dust of the nebula
Hubble’s Jupiter and the Shrinking Great Red Spot Image Credit: NASA, ESA, Hubble, OPAL Program, STScI; Processing: Karol Masztalerz Explanation: What will become of Jupiter’s Great Red Spot? Gas giant Jupiter is the solar system’s
Magellanic Mountain Image Credit & Copyright: Carlos Fairbairn Explanation: Flanked by satellite galaxies of the Milky Way a volcanic peak rises from this rugged horizon. The southern night skyscape looks toward the south over Laguna Lejia and
Total Solar Eclipse Corona in HDF Image Credit & Copyright: Nicolas Lefaudeux Explanation: How great was the Great American Eclipse? The featured HDR image shows it to be perhaps greater than we knew. On August 21 of last year, the Moon blocked the
Moon Halo over Stone Circle Image Credit & Copyright: Alyn Wallace Photography Explanation: Have you ever seen a halo around the Moon? This fairly common sight occurs when high thin clouds containing millions of tiny ice crystals cover much of the
The View Toward M101 Image Credit & Copyright: Joonhwa Lee Explanation: Big, beautiful spiral galaxy M101 is one of the last entries in Charles Messier’s famous catalog, but definitely not one of the least. About 170,000 light-years across,
The Red Rectangle Nebula from Hubble Image Credit: Hubble, NASA, ESA; Processing & License: Judy Schmidt Explanation: How was the unusual Red Rectangle nebula created? At the nebula’s center is an aging binary star system that surely powers
Galaxies in the River Image Credit & Copyright: Michel Meunier, Laurent Bernasconi, Janus Team Explanation: Large galaxies grow by eating small ones. Even our own galaxy practices galactic cannibalism, absorbing small galaxies that get too close
A Plurality of Singularities at the Galactic Center Image Credit: NASA/CXC / Columbia Univ./ C. Hailey et al. Explanation: A recent informal poll found that astronomers don’t yet have a good collective noun for a group of black holes, but they
Sakurajima Volcano with Lightning Image Credit & Copyright: Martin Rietze (Alien Landscapes on Planet Earth) Explanation: Why does a volcanic eruption sometimes create lightning? Pictured above, the Sakurajima volcano in southern Japan was caught
Kepler’s House in Linz Image Credit & Copyright: Erich Meyer (Astronomical Society of Linz) Explanation: Four hundred years ago today (May 15, 1618) Johannes Kepler discovered the simple mathematical rule governing the orbits of the solar
Rotation of the Large Magellanic Cloud Image Credit & Licence: ESA, Gaia, DPAC Explanation: This image is not blurry. It shows in clear detail that the largest satellite galaxy to our Milky Way, the Large Cloud of Magellan (LMC), rotates. First
Attack of the Laser Guide Stars Image Credit & License: European Southern Observatory / Gerhard Hudepohl (atacamaphoto.com) Explanation: Dodging powerful laser beams, a drone captured this stunning aerial view. The confrontation took place above
Reflections of Venus and Moon Image Credit & Copyright: Filippo Curti (Sanderphil Urban Observatory) Explanation: Posing near the western horizon, a brilliant evening star and slender young crescent shared reflections in a calm sea last Thursday
In the Heart of the Tarantula Nebula Image Credit: ESA, NASA, Hubble, ESO; Processing: Danny LaCrue Explanation: In the heart of monstrous Tarantula Nebula lies huge bubbles of energetic gas, long filaments of dark dust, and unusually massive stars.
Craters and Shadows at the Lunar Terminator Image Credit & Copyright: Talha Zia Explanation: Why does the right part of this image of the Moon stand out? Shadows. The terminator line – the line between light and dark – occurs in the
The Gum Nebula Expanse Image Credit & Copyright: John Gleason Explanation: Named for a cosmic cloud hunter, Australian astronomer Colin Stanley Gum (1924-1960), The Gum Nebula is so large and close it is actually hard to see. In fact, we are only
Galaxies Away Image Credit & Copyright: Data - Hubble Legacy Archive, Processing - Domingo Pestana Explanation: This stunning group of galaxies is far, far away, about 450 million light-years from planet Earth and cataloged as galaxy cluster Abell
Titan: Moon over Saturn Image Credit: NASA, JPL-Caltech, Space Science Institute Explanation: Like Earth’s moon, Saturn’s largest moon Titan is locked in synchronous rotation. This mosiac of images recorded by the Cassini spacecraft in
Seven Dusty Sisters Image Credit: WISE, IRSA, NASA; Processing & Copyright : Francesco Antonucci Explanation: Is this really the famous Pleaides star cluster? Known for its iconic blue stars, the Pleaides is shown here in infrared light where the
NGC 6744 Close Up Image Credit: NASA, ESA, and the LEGUS team Explanation: Beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across, larger than our own Milky Way. It lies some 30 million light-years distant in the southern constellation
Saturn’s Iapetus: Painted Moon Image Credit: NASA, ESA, JPL, SSI, Cassini Imaging Team Explanation: What has happened to Saturn’s moon Iapetus? Vast sections of this strange world are dark as coal, while others are as bright as ice. The
Complex Jupiter Image Credit: NASA, Juno, SwRI, MSSS; Composition: David Marriott Explanation: How complex is Jupiter? NASA’s Juno mission to Jupiter is finding the Jovian giant to be more complicated than expected. Jupiter’s magnetic field
A Sun Pillar over Norway Image Credit: Thorleif Rødland Explanation: Have you ever seen a sun pillar? When the air is cold and the Sun is rising or setting, falling ice crystals can reflect sunlight and create an unusual column of light. Ice sometimes
Fermi Science Playoffs Image Credit: NASA, DOE, International Fermi LAT Collaboration, Jay Friedlander (Goddard Spaceflight Center) Explanation: NASA’s Fermi Gamma-ray Space Telescope was launched into orbit on June 11th, 2008. Its instruments
Countryside Mars and Milky Way Image Credit & Copyright: Jose Luis Hernandez Verdejo Explanation: Mars shines brightly now in planet Earth’s sky. Seen with a yellowish hue it rises over the hills and far away in this serene night skyscape,
The Cat’s Eye Nebula from Hubble Image Credit: NASA, ESA, HEIC, and The Hubble Heritage Team (STScI/AURA) Explanation: To some, it may look like a cat’s eye. The alluring Cat’s Eye nebula, however, lies three thousand light-years
Red Cloudbow over Delaware Image Credit & Copyright: Michael C. Neff (Neffworks Artography Explanation: What kind of rainbow is this? In this case, no rain was involved – what is pictured is actually a red cloudbow. The unusual sky arc was
Six Planets from Yosemite Image Credit & Copyright: Rogelio Bernal Andreo (Deep Sky Colors) Explanation: The five naked-eye planets, Mercury, Venus, Mars, Jupiter and Saturn, have been seen since ancient times to wander the night skies of planet
Little Planet Soyuz Image Credit & Copyright: Andrew Bodrov Explanation: Engines blazing, a large rocket bids farewell to this little planet. Of course, the little planet is really planet Earth and the large rocket is a Soyuz-FG rocket. Launched
Dusty With a Chance of Dust Image Credit: NASA, JPL-Caltech, MSSS, Curiosity Mars Rover Explanation: It’s storm season on Mars. Dusty with a chance of dust is the weather report for Gale crater as a recent planet-scale dust storm rages. On June
Mars Engulfed Image Credit: J. Bell (ASU), M. Wolff (Space Science Inst.), Hubble Heritage Team (STScI / AURA), NASA Explanation: What’s happened to Mars? In 2001, Mars underwent a tremendous planet-wide dust storm – one of the largest ever
Ancients of Sea and Sky Image Credit & Copyright: Jingyi Zhang Explanation: They may look like round rocks, but they’re alive. Moreover, they are modern versions of one of the oldest known forms of life: stromatolites. Fossils indicate that
Pillars of the Eagle Nebula in Infrared Image Credit: NASA, ESA, Hubble, HLA; Processing: Lluís Romero Explanation: Newborn stars are forming in the Eagle Nebula. Gravitationally contracting in pillars of dense gas and dust, the intense radiation
Northern Lights and Noctilucent Clouds Image Credit & Copyright: Adrien Mauduit Explanation: Skies after the near-solstice sunset on June 17 are reflected in this calm lake. The tranquil twilight scene was captured near Bashaw, Alberta, Canada,
Galaxy in a Crystal Ball Image Credit & Copyright: Juan Carlos Munoz Explanation: A small crystal ball seems to hold a whole galaxy in this creative snapshot. Of course, the galaxy is our own Milky Way. Its luminous central bulge marked by rifts
Curiosity’s Dusty Self Image Credit: NASA, JPL-Caltech, MSSS, Curiosity Mars Rover Explanation: Winds on Mars can’t actually blow spacecraft over. But in the low gravity, martian winds can loft fine dust particles in planet-wide storms,
Hayabusa2 Approaches Asteroid Ryugu Image Credit & Copyright: ISAS, JAXA, Hayabusa2 Team Explanation: It looks like a big space diamond – but with craters. It’s 162173 Ryugu (Dragon’s Castle), and Japan’s robotic Hayabusa2
Highlights of the Summer Sky Illustration Credit & Copyright: Universe2go.com Explanation: What can you see in the night sky this summer? The featured graphic gives a few highlights for Earth’s northern hemisphere. Viewed as a clock face
Sigma Octantis and Friends Image Credit & Copyright: Frank Sackenheim Explanation: South pole star Sigma Octantis (of the constellation Octans) is on the left of this starry expanse spanning over 40 degrees across far southern skies. You’ll
Messier 24: Sagittarius Star Cloud Image Credit & Copyright: Roberto Colombari Explanation: Unlike most entries in Charles Messier’s famous catalog of deep sky objects, M24 is not a bright galaxy, star cluster, or nebula. It’s a gap
The East 96th Street Moon Image Credit & Copyright: Stan Honda Explanation: A very full Moon rose over Manhattan’s Upper Eastside on June 28, known to some as the Strawberry Moon. Near the horizon, the warm yellow lunar disk was a bit ruffled
Fresh Tiger Stripes on Saturn’s Enceladus Image Credit: NASA, ESA, JPL, SSI, Cassini Imaging Team Explanation: Do underground oceans vent through the tiger stripes on Saturn’s moon Enceladus? Long features dubbed tiger stripes are known
Symbiotic R Aquarii Image Credit: Hubble, NASA, ESA; Processing & License: Judy Schmidt Explanation: You can see it change in brightness with just binoculars over the course of a year. Variable star R Aquarii is actually an interacting binary star
apod: 2018 January 10 NGC 2623: Merging Galaxies from Hubble Image Credit: ESA/Hubble & NASA Explanation: Where do stars form when galaxies collide? To help find out, astronomers imaged the nearby galaxy merger NGC 2623 in high resolution with
apod: 2021 April 4 In, Through, and Beyond Saturn’s Rings Image Credit: Cassini Imaging Team, ISS, JPL, ESA, NASA Explanation: Four moons are visible on the featured image – can you find them all? First – and farthest in the background – is
