April 30th, 2009
It's Official: Hubble Mission to Launch May 11
Mission patch for STS-125. Credit: NASA
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Universe Today
Hubble, Missions, Space Shuttle
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April 30th, 2009
New Mysteries Unveiled on Mercury
The Rembrandt impact crater basin on Mercury. Credit: Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Smithsonian Institution/Carnegie Institution of Washington
Even though Mercury looks like the Moon at first glance, scientists from the MESSENGER mission say it's becoming apparent that Mercury is an amazingly dynamic planet, and is actually more like Mars. For example, before this mission, scientists weren't sure if volcanism even existed on Mercury, but from the spacecraft's two flybys, they now know it is a very important part of the planet's history. Additional new findings from the second flyby of Mercury in October 2008 show that the planet’s atmosphere, magnetosphere, and geological past are all characterized by much greater levels of activity than scientists first suspected.
And by the way, isn't this a stunning picture of an impact basin? It's one of the new discoveries from MESSENGER.
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April 30th, 2009
The NASA Buzz: Shuttle Extension, Abandoning the Moon, and What About an Administrator?
Possible NASA lunar base. Credit: NASA
The blogosphere and Twitterverse has been buzzing the past couple of days with NASA what-ifs and possibilities. But that usually happens whenever there are Congressional hearings about our favorite space agency. Here's the run-down of what is really happening: No extra money has been given to extend the shuttle program as of yet but it is a possibility. NASA is not going to abandon going to the Moon. And no, President Obama hasn't named a new NASA administrator yet. Want the details?
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April 30th, 2009
Starbursts from Dwarf Galaxies Like Fireworks
These images, taken by NASA's Hubble Space Telescope, show myriad stars residing in the central regions of the three dwarf galaxies NGC 4163, NGC 4068, and IC 4662. Credit: NASA, ESA, K. McQuinn (University of Minnesota, Minneapolis), and I. Karachentsev (Special Astrophysical Observatory of the Russian Academy of Sciences, Russia)
Fireworks in space? Astronomers are comparing "starbursts" from a galaxy that is in the throes of star formation to a Fourth of July fireworks display. And three particular galaxies are like my children's favorite part of a fireworks display: the grand finale. These bursts occur at a fast and furious pace, lighting up a region for a short time before winking out. But that's only part of the story. Archived data from the Hubble Space Telescope are showing that starbursts — intense regions of star formation — sweep across the whole galaxy and last 100 times longer than astronomers thought. The longer duration may affect how dwarf galaxies change over time, and therefore may shed light on galaxy evolution.
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April 29th, 2009
Where In The Universe #52
Its time once again for another Where In The Universe Challenge. The goal of this challenge is to test your skills and knowledge of the cosmos. Guess where in the Universe this image is from, and give yourself extra points if you can guess which spacecraft is responsible for the image. Post your guess in the comment section (no links to hints please!) and check back tomorrow for the answer. Good luck!
UPDATE: The answer has now been posted below.
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April 29th, 2009
Opportunity Finds Young Crater on Mars
A brand new bouncing baby crater. Opportunity Rover, portion of Navcam mosaic (Sol 1825; PIA 1185). Image credit: NASA/JPL-Caltech
The two Mars Exploration Rovers have both seen their fair share of craters in their five years on Mars. Opportunity is currently booking it across Meridiani Planum on her way to Endeavour Crater, an ancient, huge hole in the ground (22 kilometers (13.7 miles across). But recently she came across the youngest crater either rover has ever seen. This crater is "young," in relative terms; scientists say this small crater called "Resolution" formed sometime in the past 100,000 years. Most features studied by Opportunity are much older, including rocks over 3 billion years old. In contrast to these seniors, Resolution is just a baby.
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April 29th, 2009
IYA Live Telescope Today – Messier 10
We certainly hope you had the opportunity to keep an eye on our remote telescope! Despite the weather changes in the southern hemisphere causing a little rain delay, we’ve been looking forward to a clear night and firing the telescope back up. I know it’s certainly fascinating to watch and don't be disappointed if you log on and get an error message. (That just means the scope is not operating at the moment or you need to refresh.) If you didn’t get a chance to watch the IYA telescope “live” on Galactic TV today, don’t worry. We took a video capture for you. Step inside to enjoy today’s view of Messier Object 10. We do it all for you… Read more…
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April 29th, 2009
Russia Considering Rocket-Powered Precision Landing for Next Generation Spacecraft
The future Russian capsule could land on a bright rocket plume. Credit: Anatoly Zak, Russianspaceweb.com
Engineers for Russia's next-generation manned space vehicle are considering a rocket-powered landing system which would provide precision landing on Earth. Currently, the Soyuz uses small solid propellant motors to soften its touchdown, but the ship's parachute plays the main role in providing the vehicle and crew with a safe landing. Russia is developing a new spacecraft to replace the Soyuz which has been used for nearly forty years. If the rocket-powered landing system is approved, this would be the first time in history that a manned vehicle relied solely on rocket engines for touchdown.
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April 29th, 2009
Confirmed: Chocolate and Astronomy Go Together
Chocolate astronomy sculpture. Credit: Museo de Chocolate.
Two of my greatest loves are coming together at the Museo de Chocolate (Chocolate Museum) of Barcelona. To celebrate the International Year of Astronomy 2009, this year's International Contest of Chocolate Figures has chosen astronomy as its theme. And the fourteen sculptures that are part of the competition –in which the designers use chocolate to embody creative astronomical interpretations, as the one seen here — will be on display at the Museo de Chocolate starting on May 7 in a new temporary exhibition, "Los Mundos Celestes-400 años del descubrimiento del sistema solar" (Celestial Worlds – 400 years since the discovery of the Solar System). I understand the exhibition as being temporary, but my question is, who gets to eat them?
Source: Pasteleria.com
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April 29th, 2009
Nearsighted No More: Astronomers Resolve Milky Way's Mysterious X-Ray Glow
Credit: M. Revnivtsev
The map above details the Galactic ridge X-ray emission, first detected 25 years ago and observed recently by NASA's Rossi X-ray Timing Explorer (RXTE) observatory. The inset shows the zoomed Chandra image of the region, close to the center of the galaxy.
The mysterious — and formerly blurry — X-ray source puzzled astronomers for a quarter century, but a new paper release today by the journal Nature has helped to clear the air.
Filed under: Astronomy, milky way | 8 Comments »
April 29th, 2009
Salt in Enceladus' Geysers Hints at Subsurface Liquid Ocean
Enceladus Ice Geysers Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA
Planetary scientists say the geysers shooting from Saturn's moon Enceladus are likely to come from a subsurface sea of liquid water. During the Cassini spacecraft's fly-through of the geyser's plume on October 9, 2008, the instruments on board were able to measure the molecular weight of the chemicals in the ice. Detected were traces of sodium in the form of salt and sodium bicarbonate. The chemicals would have originated in the rocky core of Enceladus, so to reach a plume they must have leached from the core via liquid water.
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April 29th, 2009
European, Chinese Satellites Watch Solar Storms Pummel Earth
Scientists have long understood that satellites are at risk from bombardment by solar storms. Now, they've gotten a closer look at how the storms are punishing Earth's magnetosphere, leaving satellites exposed.
The movie above, and the solar flare video below, were released by the European Space Agency today, along with descriptions of two solar eruptions spotted using ESA’s four Cluster satellites and the two Chinese/ESA Double Star satellites.
Filed under: Earth, Solar Astronomy | 18 Comments »
April 29th, 2009
Rogue Black Holes May Wander the Galaxy
Artists concept of a rogue black hole floating near a globular cluster star near the outskirts of the Milky Way. Credit: David A. Aguilar, CfA
Here's another "rogue black hole" theory, which hopefully doesn't set the doomsday crowd off on a new tangent. But new research suggests that hundreds of massive black holes, left over from the early galaxy-building days of the Universe, may wander the Milky Way. Astrophysicists Ryan O'Leary and Avi Loeb say that rogue black holes originally lurked at the centers of tiny, low-mass galaxies. Over billions of years, those dwarf galaxies smashed together to form full-sized galaxies like the Milky Way. But they also predict that Earth should be safe, as the closest rogue black hole should reside thousands of light-years away.
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April 28th, 2009
Mars Rovers Are "Good Old Girls"
Our beloved Mars Exploration Rovers, Spirit and Opportunity have seemingly touched us all with their amazing discoveries and their apparently quite different and quirky personalities, but most of all with their durability and resilience. They've survived through two rough Martian winters and a couple of nasty dust storms, not to mention persevering through everything the JPL scientists and engineers have asked them to do (climbing hills, descending into craters, for example) and putting on more mileage than anyone ever thought possible. To honor the rovers and to commemorate their five years on Mars, one of my fellow Solar System Ambassadors, Steve Hammond, has created a video of highlights from the rovers, set to music by the very talented Marion Call with her song "Good Old Girl." Steve says in his blog, Ridiculous Thoughts, that the topic he gets the most request for as a Solar System Ambassador is Mars, and particularly the rovers. "Public interest hasn’t waned. It seems that everybody I talk to knows Spirit and Opportunity by name, and at least some highlights of their mission. People genuinely care about these little robots." Thanks to Steve for sharing the video. Enjoy!
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April 28th, 2009
Herschel and Planck Set to Launch on May 14
The Herschel and Planck spacecraft. Credit: ESA
The European Space Agency announced today that the Herschel and Planck spacecraft will now launch on May 14. Liftoff had been delayed to allow time for additional checks on the Ariane 5 ECA launch vehicle. The two spacecraft are launching together in what was originally a cost saving move, but the complexity of preparing two spacecraft at once has caused frequent delays and cost overruns. However, now that the launch is near, hopefully the cutting-edge technologies included in both spacecraft will soon pay off in new discoveries astronomy and cosmology.
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Filed under: Missions, Observatories | 5 Comments »
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