Jupiter’s Great Red Spot is a swirling anticyclonic storm that was previously large enough to fit three Earths inside. However, observations taken by the NASA/ESA Hubble Space Telescope has revealed that this is changing, both in shape and size.
So why is Jupiter’s trademark feature beginning to downsize?
Carl Sagan once proposed the idea of sailing through the cosmos via a solar-powered spacecraft. This spaceship would use sunlight radiation to power its flight much like a boat uses the wind for propellant. On May 20th, the Sagan co-founded Planetary Society will initiate its first test flight for such a solar vehicle: the LightSail.
North America is predicted to have the best view of a possible new meteor shower from Comet 209P/LINEAR Friday night through Saturday morning (May 23-24, 2014). (Deborah Boyd-EarthSky)
We have had some astronomical disappointments of late but we might just see a really nice meteor shower this Friday night into Saturday morning.
Meteors from the May 24th’s early-morning display can appear anywhere in the sky, but they will appear to originate from a point (called the radiant) in the constellation Camelopardalis, the Giraffe. Stars are plotted for 2 a.m. local daylight time as seen from mid-northern latitudes. Sky & Telescope illustration.
I plan on being up with my Nikon and mosquito spray to hopefully get some nice shots of the unexpected astronomical display. What a nice late spring surprise and who knows, maybe an nice annual event.I will share photos here on Saturday… if all goes well.
“The minuscule ripples in space-time are the last prediction of Albert Einstein’s 1916 general theory of relativity to be verified. Until now, there has only been circumstantial evidence of their existence. The discovery also provides a deep connection between general relativity and quantum mechanics, another central pillar of physics.”(Stuart Clark)
Scientists, from left, Clem Pryke, Jamie Bock, Chao-Lin Kuo and John Kovac smile during a news conference at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., on March 17, 2014.
The measurements were taken using the BICEP2 instrument at the South Pole Telescope facility. Now we wait as the scientific community deliberates these findings and maybe, just maybe, we have confirmed more of Einstein’s brilliance.
“NASA plots daring flight to Jupiter’s watery moon”
(Credit: NASA/JPL/Ted Stryk)
On March 4, 2014 Charles Bolden, NASA Administrator, released a statement which includes, “In the coming year, we’ll build on our nation’s record of breathtaking and compelling scientific discoveries and achievements in space, with science missions that will reach far into our solar system, reveal unknown aspects of our universe and provide critical knowledge about our home planet. It includes funding for missions to Mars and the formulation for a mission to Jupiter’s moon, Europa.”
It looks as though we may finally go to a ‘local’ body that will hold many surprises and in astronomical distances Europa is so very close.
Europa is just begging us to visit and the Europa Clipper is one mission.
This artist’s impression of Europa makes the place look more exotic than Mars.
An artist’s conception of the dwarf planet Ceres in the asteroid belt between the orbits of Mars and Jupiter. Image Credit: ESA/ATG medialab
With the crazy winter weather warnings today in south Louisiana and even school cancellations for tomorrow, I thought it was an interesting time to find out that the dwarf planet Ceres has an icy surface also. With the help of the Herschel space observatory, scientists have detected an icy surface on the only dwarf planet that resides in the asteroid belt. It was previously suspected that ice existed on Ceres but it had not been conclusively detected until now. Plumes of water vapor are thought to shoot up from Ceres when portions of its icy surface warm slightly. This happens in the portion of the dwarf planet’s orbit that takes it closest to the sun. This is a surprise because, while comets are known to have water jets and plumes, objects in the asteroid belt are not. They also believe that if the ice in the interior of Ceres melted, there would be more fresh water than exists on all of Earth!
Ceres is smaller than a planet but, considering it’s the largest object in the asteroid belt, is obviously larger than an asteroid. When first discovered, Ceres was thought to be a comet, then a planet and of course at some point an asteroid. In 2006, The International Astronomical Union reclassified Ceres as a dwarf planet.
Artist’s impression of the Rosetta orbiter deploying the Philae lander to comet 67P/Churyumov–Gerasimenko. After an extensive mapping phase by the orbiter in August–September 2014, a landing site will be selected for Philae to conduct in situ measurements in November 2014. The image is not to scale; the Rosetta spacecraft measures 32 m across including the solar arrays, while the comet nucleus is thought to be about 4 km wide. (Photo: ESA)
Scientists at the European Space Agency (ESA) sounded Rosetta’s internal alarm clock to reboot the mission after two-and-a-half years of deep space slumber. Once its systems warm up, Rosetta is due to beam a signal back to Earth before it begins to home in on a frozen rock known as 67P/Churyumov-Gerasimenko. It is due to shoot harpoons into the 2.5-mile dirtball before its Philae lander docks on the surface – a move that has never been attempted before.
ESA project scientist Matt Taylor likened the mission to that of the action film Armageddon, in which Bruce Willis lands on an asteroid to save the world from destruction. “We’re not just landing on the Moon, we’re dealing with something dynamic, which is kicking off tons of dust and gas every minute,” he told the Sunday Telegraph. Because Rosetta, which has been sleeping to save power, is so far from Earth, it will take 45 minutes for its signal to reach scientists at mission control. They expect to see a blip on computer monitors between 1730 and 1830 GMT, indicating the spacecraft is up and running again.
Dr. Dan Andrews, a planetary scientist at the Open University in Milton Keynes, said: “We’re waiting to hear Rosetta is alive and healthy. “This wake-up call kicks off a chain of events, during which the spacecraft heats itself up, points itself towards the Sun and gets itself ready. “Remember, this mission is 10 years old – it’s a bit of a stroppy teenager and it’s going to take a while to wake up.” If all goes to plan, Rosetta will arrive at Churyumov-Gerasimenko in August before descending to the comet several months later.
Orion, the hunter, is one of the most popular constellations in the night sky; so you may have already seen him this winter or in late fall. Throughout the year, no matter the season, when I am in schools with our Discovery Dome portable planetarium someone often asks me to point out Orion. The mighty hunter is also one of the largest and easiest constellations to find. Most people find it by locating the three stars that make up Orion’s “belt” which is an asterism or recognizable group of stars that are part of a constellation. The names of the three stars that make up Orion’s belt are Alnitak, Alnilam and Minatka. One of the brightest stars in the sky is on Orion’s right shoulder. It’s called Betelgeuse.
Orion’s belt is the only group of three stars that are spaced so evenly making them very easy to recognize. Once you have found the belt, the hunter easily pops into view especially when it is right overhead during the cold evenings of winter.
Besides being easy to spot, the constellation Orion is also where you will find one of the most beautiful objects in the night sky, the Orion Nebula. Count down to the third bright object in Orion’s sword and you will find not a star but the Orion Nebula. With binoculars focused on this object, you will find many stars rather than one.
So the next time you look for Orion in the night sky be sure to also take a look at the third object in his sword for the giant cloud of gas and dust that makes up this birthplace or stars and solar systems.
The Orion Nebula from the Hubble Space Telescope. Credit: NASA