A recap of January in pictures! Winters the best time for astrophotography which is why I’ve had plenty of opportunities to get outside and capture the cosmos!
The spacecraft Cassini captured some raw images of the icy Saturn moon, Enceladus from just 30 miles away. The small crescent moon erupted a geyser at its South Pole, backlit plumes filled with salt water and organic compounds. Read full article and view these pictures here.
Dark, cold and whipped by supersonic winds, Neptune is the last of the hydrogen and helium gas giants in our solar system. More than 30 times as far from the sun as Earth, the planet takes almost 165 Earth years to orbit our sun! In fact, in 2011, Neptune completed its first orbit since its discovery in 1846.
Here are a few things you might not know about the windiest planet:
If the sun were as tell as a typical front door, the Earth would be the size of a nickel and Neptune would be about as big as a baseball.
Neptune orbits our sun, a star. Neptune is the eighth planet from the sun at a distance of about 4.5 billion km (2.8 billion miles) or 30.07 AU.
One day on Neptune takes about 16 hours (the time it takes for Neptune to rotate or spin once)
Neptune makes a complete orbit around the sun (a year in Neptunian time) in about 165 Earth years (60,190 Earth days)
Neptune has six rings
Voyager 2 is the only spacecraft to have visited Neptune
Neptune has 13 moons. They are named after various sea gods and nymphs in Greek mythology
Did you know that Neptune has storms?
Similar to Jupiter, Neptune has storms that create gigantic spots in its atmosphere…well, it did. When Voyager 2 flew past Neptune in 1989, it tracked and imaged the “Great Dark Spot” — a storm larger than the entire Earth! When the Hubble Space Telescope imaged Neptune the spot had disappeared, only to be replaced with two smaller storms, which in turn also disappeared.
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NASA just released the most detailed photo of space ever taken
The picture of the Andromeda galaxy, the nearest spiral galaxy to our own, is comprised of a mind-boggling 1.5 billion pixels and was snapped from 2.5 million light years away by the powerful Hubble Space Telescope.
See it in all its glory
Shuttle Plume Shadow Points to the Moon
In early 2001 during a launch of Atlantis, the Sun, Earth, Moon, and rocket were all properly aligned for this photogenic coincidence. First, for the space shuttle’s plume to cast a long shadow, the time of day must be either near sunrise or sunset. Only then will the shadow be its longest and extend all the way to the horizon. Finally, during a Full Moon, the Sun and Moon are on opposite sides of the sky. Just after sunset, for example, the Sun is slightly below the horizon, and, in the other direction, the Moon is slightly above the horizon. Therefore, as Atlantis blasted off, just after sunset, its shadow projected away from the Sun toward the opposite horizon, where the Full Moon just happened to be.
Image Credit: Pat McCracken, NASA
(via NASA)
Quadrantid Meteor Shower
The Quadrantid meteor shower on Jan. 4 will either sizzle or fizzle for observers in the U.S. The shower may favor the U.S. or it could favor Europe depending on which prediction turns out to be correct. For viewing in the United States, observers should start at 3 a.m. EST. The peak should last about two hours with rates of 120 meteors per hour predicted in areas with a dark sky.
Comet Catalina
In the middle of the month, midnight to predawn will be primetime for viewing Comet Catalina. It should be visible with binoculars if you have a dark sky, but a telescope would be ideal. Between the 14th and 17th the comet will pass by two stunning galaxies: M51, the whirlpool galaxy and M101, a fainter spiral galaxy.
Constellation Orion
Winter is also the best time to view the constellation Orion in the southeastern sky. Even in the city, you’ll see that it’s stars have different colors. Not telescope needed, just look up a few hours after sunset! The colorful stars of Orion are part of the winter circle of stars.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com
How do you feel about space movies like Gravity or the Martian etc?
I thought they were great. I watched them both here aboard the International Space Station. Movie night looks like this!
Views of the Space Shuttle Atlantis undocking from the Mir space station on July 4, 1995. Cosmonauts Anotoliy Slovyev and Nikolai Budarin unparked the Soyuz spacecraft from Mir to perform a short fly-around when they snapped these astonishing photos. (NASA)
M3 is Astronomy Magazine Picture of the Day
Einstein’s gravitational waves found at last
One hundred years after Albert Einstein predicted the existence of gravitational waves, scientists have finally spotted these elusive ripples in space-time.
In a highly anticipated announcement, physicists with the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) revealed on 11 February that their twin detectors have heard the gravitational ‘ringing’ produced by the collision of two black holes about 400 megaparsecs (1.3 billion light-years) from Earth.
“Ladies and gentlemen, we have detected gravitational waves,” David Reitze, the executive director of the LIGO Laboratory, said at a Washington DC press conference. “We did it!”
Continue reading via source: Nature
Infographic: Nik Spencer/Nature
"Astronomy compels the soul to look upwards and leads us from this world to another." - Plato
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