Feed aggregator

NASA's Chandra X-ray Observatory celebrates 15th anniversary

Science Daily - 9 hours 4 min ago
Fifteen years ago, NASA's Chandra X-ray Observatory was launched into space aboard the Space Shuttle Columbia. Since its deployment on July 23, 1999, Chandra has helped revolutionize our understanding of the universe through its unrivaled X-ray vision.

NASA's Fermi finds a 'transformer' pulsar

Science Daily - 9 hours 48 min ago
In late June 2013, an exceptional binary containing a rapidly spinning neutron star underwent a dramatic change in behavior never before observed. The pulsar's radio beacon vanished, while at the same time the system brightened fivefold in gamma rays, the most powerful form of light, according to measurements by NASA's Fermi Gamma-ray Space Telescope.

Hubble traces halo of a galaxy more accurately than ever before: An in-depth look at giant elliptical galaxy Centaurus A

Science Daily - 11 hours 30 min ago
Astronomers have probed the extreme outskirts of the stunning elliptical galaxy Centaurus A. The galaxy's halo of stars has been found to extend much further from the galaxy's center than expected and the stars within this halo seem to be surprisingly rich in heavy elements. This is the most remote portion of an elliptical galaxy ever to have been explored.

Spacecraft Rosetta Shows Comet has Two Components

APOD - 18 hours 11 min ago

Why does this comet's nucleus have two components? Why does this comet's nucleus have two components?


A Solar Filament Erupts

APOD - 18 hours 11 min ago

What's happened to our Sun? What's happened to our Sun?


Alicante Beach Moonrise

APOD - 18 hours 11 min ago

In this beach and skyscape from Alicante, Spain, In this beach and skyscape from Alicante, Spain,


Ou4: A Giant Squid Nebula

APOD - 18 hours 11 min ago

A mysterious, squid-like apparition, this nebula A mysterious, squid-like apparition, this nebula


3D Homunculus Nebula

APOD - 18 hours 11 min ago

3D Homunculus Nebula 3D Homunculus Nebula


The Moon Eclipses Saturn

APOD - 18 hours 11 min ago

What happened to half of Saturn? What happened to half of Saturn?


Cave with Aurora Skylight

APOD - 18 hours 11 min ago

Yes, but have you ever seen aurora from a cave? Yes, but have you ever seen aurora from a cave?


A Tail of Two Comets and Algol

Astronomy Sketch of the Day - 18 hours 52 min ago
Comet C/1996 B2 (Hyakutake) - April 10, 1996 and Comet C/1995 01 (Hale-Bopp) - April 10, 1997

Comet C/1996 B2 (Hyakutake) – April 10, 1996 and Comet C/1995 01 (Hale-Bopp) – April 10, 1997

Hey ASOD!

This is not often to see on the sky, two comet-tails with the star ALGOL
in the middle of them!!
The observations were made one year apart, but both at 10 apr. 21.00U.T.!
More info on my sketches! I hope you all enjoy the observations.
Both sketches were made with waterbased color- crayons on black paper.
Loc.: Trondheim, Norway.
Thank you for comments, and have a nice time under the stars!

Best from Per-Jonny Bremseth.


Transiting exoplanet with longest known year: 704 Earth days

Science Daily - Mon, 07/21/2014 - 14:22
Astronomers have discovered a transiting exoplanet with the longest known year. Kepler-421b circles its star once every 704 days. In comparison, Mars orbits our Sun once every 780 days. Most of the 1,800-plus exoplanets discovered to date are much closer to their stars and have much shorter orbital periods.

A Blue Bridge of Stars between Cluster Galaxies

APOD - Mon, 07/21/2014 - 06:42

Why is there a blue bridge of stars across the center of this galaxy cluster? Why is there a blue bridge of stars across the center of this galaxy cluster?


Oceans vital for possibility for alien life

Science Daily - Sun, 07/20/2014 - 20:34
Researchers have made an important step in the race to discover whether other planets could develop and sustain life. New research shows the vital role of oceans in moderating climate on Earth-like planets Until now, computer simulations of habitable climates on Earth-like planets have focused on their atmospheres. But the presence of oceans is vital for optimal climate stability and habitability.

Auroras over Northern Canada

APOD - Sun, 07/20/2014 - 03:42

Auroras over Northern Canada Auroras over Northern Canada


A little fat Owl

Astronomy Sketch of the Day - Sun, 07/20/2014 - 03:00
"A Little Fat Owl", Lunar craters Fra Mauro, Parry and Bonpland - May 8, 2014

“A Little Fat Owl”, Lunar craters Fra Mauro, Parry and Bonpland – May 8, 2014

It had been a while since I did a lunar sketch. May saw me complete my first lunar sketch in many months. I made several attempts, but on those occasions, seeing was so poor the Moon was ‘boiling’ using just 100X magnification. Disappointing and frustrating. Eventually things did change in my favour…

As always, unless I have a specific target in mind, I just let my eye wonder along the terminator to see what pricks my interest. And, as there are several repeated alphanumeric apparitions on the Moon, I’ve found a second avian one! Some time ago I spotted an owl formed around the crater Mercator. Last night I found a second Owl, this time around the flooded craters Fra Mauro (the fat body), Parry (the right eye), and Bonpland (the left eye).Cute little fella I think is formed here J.

As it turns out, Fra Mauro is just to the south of the Apollo 14 landing site – south is to the top of the page, so the Apollo 14 site lies just below where the Owl’s feet would be.

Object: “Little Fat Owl”, craters Fra Mauro, Parry and Bonpland
Scope: C8, 8” SCT
Gear: 5mm Baader Hyperion, 400X
Date: 8th May, 2014
Location: Sydney, Australia
Media: White & grey soft pastel, charcoal and white ink on A5 size black paper
Duration: approx. 2hrs.


NGC 6822 Barnard’s Galaxy

Astronomy Sketch of the Day - Sat, 07/19/2014 - 03:00
NGC 6822, Barnard's Galaxy

NGC 6822, Barnard’s Galaxy

Hi ASOD community last month to observe this incredible background irregular galaxy is weak but not enough to be spooky. A striking detail is to visualize the light concentration from north to south, with the odd within this park. All the more weak and irregular with a grainy appearance of faint stars that come and go, some of them more clear and stable outer layer.

I was very pleased with what you see through the eyepiece, not expecting much of this beautiful galaxy.

Best Regards.

Roberto.

Object name: NGC 6822
Object type: Galaxy
Location: Arroba de los montes Ciudad Real ( spain )
Date: 27 June 2014
Hour: 03:20 < 04:00
Media: Graphite pencil, processed and inverted gimp 2.8
Optical equipment: Dobsonian telescope Meade Lightbridge 10'' F/5 Eye piece Ethos 13mm
Magnification 97x True field 1°
Sky conditions: Calm wind, transparency 4/5 Seeing 3/5. Temperature 11,1°C / RH 62% SQM 21,56

http://dibujodelcielonocturno.blogspot.com.es/ web site


Planetary Nebula NGC 2818 from Hubble

APOD - Sat, 07/19/2014 - 00:42

NGC 2818 is a beautiful NGC 2818 is a beautiful


Looking back at the Jupiter crash 20 years later

Science Daily - Fri, 07/18/2014 - 10:30
Twenty years ago, human and robotic eyes observed the first recorded impact between cosmic bodies in the solar system, as fragments of comet Shoemaker-Levy 9 slammed into the atmosphere of Jupiter. Between July 16 and July 22, 1994, space- and Earth-based assets managed by NASA's Jet Propulsion Laboratory in Pasadena, California, joined an armada of other NASA and international telescopes, straining to get a glimpse of the historic event.

NASA rover's images show laser flash on Martian rock

Science Daily - Fri, 07/18/2014 - 10:22
Flashes appear on a baseball-size Martian rock in a series of images taken Saturday, July 12 by the Mars Hand Lens Imager (MAHLI) camera on the arm of NASA's Curiosity Mars Rover. The flashes occurred while the rover's Chemistry and Camera (ChemCam) instrument fired multiple laser shots to investigate the rock's composition.
Syndicate content