Marrec Selous

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APOD: A Year on the Sun (2013 Apr 26) Image Credit: NASA, Solar Dynamics Observatory Explanation: Our solar system's miasma of incandescent plasma, the Sun may look a little scary here. The picture is a composite of 25 images recorded in extreme ultraviolet light by the orbiting Solar Dynamics Observatory between April 16, 2012 and April 15, 2013. The particular wavelength of light, 171 angstroms, shows emission from highly ionized iron atoms in the solar corona at a characteristic temperatures of about 600,000 kelvins (about 1 million degrees F). Girdling both sides of the equator during the approach to maximum in its 11-year solar cycle, the solar active regions are laced with bright loops and arcs along magnetic field lines. Of course, a more familiar visible light view would show the bright active regions as groups of dark sunspots. Three years of Solar Dynamics Observatory images are compressed into this short video. Starship Asterisk* • APOD Discussion Page Starship Asterisk* • On This Day in APOD

WIRED Space Photo of the Day 2013 | WIRED

Jan. 19, 2014: Solar X-Flare<p>The largest sunspot group of the solar cycle unleashed a large (X1.2 class) flare just when it was facing right towards …

APOD: Sharp Stereo (2013 Apr 27) Image Credit: NASA, JPL-Caltech, MSL Explanation: Get out your red/blue glasses and gaze across the floor of Gale crater on Mars. From your vantage point on the deck of the Curiosity Rover Mount Sharp, the crater's 5 kilometer high central mountain looms over the southern horizon. Poised in the foreground is the rover's robotic arm with tool turret extended toward the flat veined patch of martian surface dubbed "John Klein". A complete version of the stereo view spans 360 degrees, digitally stitched together from the rover's left and right navigation camera frames taken in late January. The layered lower slopes of Mount Sharp, formally known as Aeolis Mons, are a future destination for Curiosity. Starship Asterisk* • APOD Discussion Page Starship Asterisk* • On This Day in APOD

APOD: A Raging Storm System on Saturn (2013 Apr 28) Image Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA Explanation: It was one of the largest and longest lived storms ever recorded in our Solar System. First seen in late 2010, the above cloud formation in the northern hemisphere of Saturn started larger than the Earth and soon spread completely around the planet. The storm was tracked not only from Earth but from up close by the robotic Cassini spacecraft currently orbiting Saturn. Pictured above in false colored infrared in February, orange colors indicate clouds deep in the atmosphere, while light colors highlight clouds higher up. The rings of Saturn are seen nearly edge-on as the thin blue horizontal line. The warped dark bands are the shadows of the rings cast onto the cloud tops by the Sun to the upper left. A source of radio noise from lightning, the intense storm was thought to relate to seasonal changes when spring emerges in the north of Saturn. After raging for over six months, the iconic storm circled the entire planet and then tried to absorb its own tail -- which surprisingly caused it to fade away. Starship Asterisk* • APOD Discussion Page Starship Asterisk* • On This Day in APOD

Milky Way over Crater Lake

Crater Lake in Oregon is famous for the clarity and blue color of its water. But it’s also a beautiful place to go stargazing.<p>Ben Coffman Photography …

Our blue marble... Did you know that from a distance, the Earth would be the brightest planet in the solar system? This is because the light from the sun is refracted by our oceans. #space #planets

The ringed planet. Saturn, being the second largest planet in our solar system, is so large that you could fit the earth in it 755 times! That's a lot of Earthes... #space #planets

Mercury, closest planet to the sun. Before scientists saw the first pictures of it, they believed Mercury would have a flat surface... Boy were they wrong! Mercury is the most cratered planet in the solar system. #space #planets

Neptune, the blue planet. It is the planet with the highest wind speeds in the solar system, some reaching up to 2000km/h! It gives a whole new meaning to blowing your socks off... #space #planets

Halley's Comet. It may not be a planet, but in this picture taken in 1910, you can see Halley's Comet's beautiful tail. Writer Mark Twain was born two weeks after an appearance of Halley's Comet and once wrote that he was born with the comet and would die with the comet. He eventually died one day after another appearance of Halley's Comet. #space #planets

Uranus, the planet with a methane atmosphere. When scientists first saw Uranus (no pun intended), they were disappointed by it's pale blue, featureless look. What do you think? #space #planets

Venus, the clouded orb. Venus has an incredibly strong atmospheric pressure. If you were standing on Venus (which I do not recommend doing) it would be like being 1km underwater, were there reigns a pressure strong enough to sink a submarine. You would immediately be crushed. #space #planets

Mars the red planet. Does this really need an introduction? The most famous planet in the solar system, there may still be things you don't know about it: like the fact that Mars has seasons too, caused by a similar tilt on it's axis to Earth's. #space #planets

Our Earth... From the moon. This famous photo of the Earthrise of Apollo 11 highlights the exceptional beauty of our planet. Did you know that on the Earth, we only ever see the same face of the moon? #space #planets

The Crab Nebula. The result of a supernova observed by the Chinese in 1054, it is also said in the British sci-fi show "Doctor Who" that it is actually the remains of alien weapon testing... #space #planets

Ganymede, the moon. Ganymede, here represented next to Jupiter, seems tiny. However, it is the largest moon in the solar system and 8% larger than the planet Mercury. This shows how phenomenal Jupiter's size is. #space #planets

A turbulent star making region. These regions are like stellar breeding grounds. Gases form together to give birth to new stars. These universal places of creation are often known for their breathtaking beauty. #space #planets

Carina Nebula. It is one of the brightest diffuse Nebula in our skies, brighter and four times larger than the famous Orion Nebula, and yet little know it because of it's location in the Southern Hemisphere. Isn't it beautiful... #space #planets

Messier 81. There isn't much to say about this galaxy. One of the bigger and brighter galaxies that are close to ours, it is a favorite target for amateur astronomers. #space #planets

A 3-D rendering of Mimas, one of Saturn's moons. What do you see? An eyeball staring out into the void of space or the Death Star from "Star Wars"? #space #planets Source: Space Images app, iOS, search term [Mimas]

The Galaxy Messier 104. Messier 104 is also known as, you guessed it, the sombrero galaxy, making a reference to its significantly hat-like shape. In my opinion, it also looks like a giant discus, or maybe a flying saucer... #space #planets Source: Space Images app, iOS, category: top rated

Jupiter's Great Red Spot. The Great Red Spot is a type of vortex called anticyclone. It is reckoned that it has existed for more than 300 years and is the largest vortex in the solar system. In fact, it is so big that you could fit the Earth in it several times. There are several other anticyclones like this on the gaseous world of Jupiter. #space #planets Source: Space Images app, iOS. Category: top rated.

The Mars Curiosity Rover. Curiosity used its Mars Hand Lens Imager to capture 55 high-definition pictures of different parts of itself, which were later stitched together to form this full-color self portrait. #space #planets Source: Space Images app, iOS. Category: latest.

The pinwheel galaxy... I suppose you know why it's called that way. The most amazing Thing about galaxies is the sheer number of stars which can be found in them. Maybe in one solar system, in the pinwheel galaxy, there's a race that call themselves the snamuh... See what I did there? Sorry for not posting anything yesterday guys, I was taking a day off with family. #space #planets Source: Space Images iOS app. Search term [pinwheel]

Two galaxies intertwining themselves. This is on a huge scale. The two galaxies, attracted by each other's mass and gravitational pull, turn around each other and get closer and closer and closer until they eventually fuse in a peaceful yet violent clash to form a new mega galaxy. It is predicated this will happen between the Milky Way and Andromeda Galaxy in billions of years. #space #planets Source: Space Images iOS app. Category: top rated.

Andromeda Galaxy. The closest galaxy to ours, Andromeda is a giant. A sleeping giant, in fact, because in billions of years, it will awaken and we will crash and merge with it. In the book "The Hitchhikers' Guide to the Galaxy, Andromeda is the Galaxy were are exposed the plans to destroy Earth to make way for a galactic highway... #space #planets Source: Space Images iOS app. Category: top rated.