Image by Gordan Ugarkovic. The top RGB (red/green/blue) pair is from the first flyby in January while the lower is from the second flyby from this week. The color in the latter is artistic based upon the color information provided in January’s encounter.
Time for an update to the Mercury Portrait wallpaper me thinks.
“most of the terrain east of Kuiper, toward the limb (edge) of the planet, the departing images are the first spacecraft views of that portion of Mercury’s surface. A striking characteristic of this newly imaged area is the large pattern of rays that extend from the northern region of Mercury to regions south of Kuiper.”
From the Official Messenger site.
The newest image released from the Messenger flyby of Mercury features two craters with dark halos surrounding them. The dark material was either generated by heat from the impact or was just below the surface and brought up by the impact. Either way, the assumption is that these are “newer” features since what ever process removed the dark halos from the rest of the craters — seemingly has not had the time needed to complete the process on these.
Seemed about time to update the old Mercury “portrait” wallpaper to the new Messenger Mercury “portrait”. It seems possible this color view of Mercury may be replaced again by a better view from the coming October Messenger flyby of Mercury (or perhaps by yet unreleased images from the January flyby), but for now this sure does it.
NOTE: This is a re-post, the image has been updated with Gordan Ugarkovic’s colors as the official NASA version had a good amounf of false colors which gave many details a blueish hue that would not be visible to human eyes.
Another new color image of Mercury (with a more complete globe than the previous) appeared at the Messenger site yesterday. This image can also be downloaded as the newest “portrait” image of the smallest planet here.
This image is from 32,000 kilometers after Messenger’s closest approach.
Cassini takes a pass at Titan on February 22 (already having made a pass this year on January 5th).
Soon after Titan, Cassini performs a truly unexpected maneuver and flies directly through the plumes of Enceladus on March 12th. This is a somewhat risky task for the probe as the particles it will surely encounter may pose some kind of impact threat to the spacecraft. Mission planners expect the risk to be low as they intend to turn the spacecraft around and let the less delicate side of Cassini bear the brunt of the material and photograph the geysers as it moves away from Enceladus. It should make for some of the most exciting planetary science planned for this year.
Cassini has another go at Titan on March 25.
Yup – you guessed it. Cassini at Titan again on May 12th.
The Phoenix lander arrives at Mars on May 25th and (hopefully) makes good on the failure of the Mars Polar Lander. It will be the first time a probe will attempt a landing on the Martian pole and will conduct a series of experiments looking for the existence of water ice.
You can never have too much of a good thing. Cassini at Titan again on May 28th as well as July 31.
Chandrayaan becomes India’s first planetary probe as it leaves for the moon in Early July (was April).
The extended Cassini mission has made Enceladus a prime target of investigation and the new encounters begin on Aug 11th and comes within 54km of the surface.
Rosetta still on its way for an encounter with Comet 67P/Churyumov-Gerasimenko in 2014, will make a close pass at an asteroid named 2867 Steins on Sept 5th at a distance of only 1700 km. Steins is a small asteroid measuring only a few kilometers in size and the craft will be traveling at a relatively slow speed which should allow for some good resolution images to be acquired during the encounter.
Messenger (having just completed the first encounter in 33 years this past week) has another go at Mercury on Oct 6th and flies past more uncharted territory on its way to eventual orbit insertion in 2011.
Two more close flybys of the Saturnian moon Enceladus on Oct 9 and Oct 31. The first at hair-raising distance of 25km and the second around a more reasonable 200km.
In an effort to recognize the International Lunar Decade (and intended manned Lunar missions within 15 years), the United States returns to the moon with the Lunar Reconnaissance Orbiter on Nov 3rd. It is expected to begin its scientific goals only 3 days after launch and is expected to look for possible deposits of water ice in permanently shadowed craters near the Lunar poles.
And finally more Titan flybys on Nov 3, Nov 19, Dec 5 and Dec 21.
All this is in addition to the ongoing work of Opportunity and Spirit on the surface of Mars. Mars Express and Mars Reconnaissance in orbit around Mars. Cassini’s non-targeted continuing tour of other icy Saturnian moons. And who knows, maybe we will see more than 2 or 3 reports coming from the ever quiet Venus Express mission currently at Venus.
Sadly, some very exciting missions will be quietly traveling en route to their targets and are not expected to be heard from in 08 like the Dawn Mission to the Asteroid Belt, New Horizons mission to Pluto/Charon, the newly re-targeted Deep Impact mission (now known as Epoxi) as well as Stardust now on its way to a follow-up visit to Tempel 1 the comet that was smacked by Deep Impact in 2005.
Closer images are beginning to appear. This image comes from around 20 minutes after the closest approach.
Oh… and the mission site for those of you intrigued enough to follow more data driven material.
Going backwards in progress… this is from 80 minutes before closest approach.
Looking at the inbound horizon about 55 mins before closest approach.
This is much further away than the closest approach. More to come.
Little coming in from Messenger at this point due to some unexpected bandwidth issues at the receiving stations. Apparently there has been some Ulysses (a separate Solar observing mission) anomaly that needed tending to and has taken up the available bandwidth that had been planned for Messenger’s data. The data is reportedly fine and ready for transmission to Earth, just a delay.
For now the mission team has released this view of Mercury from the historic swing by on January 14. Much (if not all) of this image represents areas on the planet never before seen by human eyes. Very moon-like… hoping for something to come from this encounter that will be visually exciting for we the unwashed-masses. That said, scientists and the planetary sort are thrilled to be seeing this local neighbor which has been long overdue for a follow-up mission to the Mariner mission of 33 years ago.
Today’s flyby will come as close as 200km from the surface. That is comparable to some of the close flybys of the Saturnian moons made by Cassini.
See here for Ted’s colorization of this image based upon his Mariner 10 work.
According to Ted Stryk (a regularly featured imager) this image has been under construction for over a year (higher resolution available here). If you are unaware, to date… no color images have seen the light of day from the 1973 Mariner 10 encounter. So it is with unexpected shock that we are granted this fine image from an old encounter the night before we are expected to be dazzled with a plethora of new Messenger images.
Although different missions are handled differently than others, we may not be granted all images as soon as they are received here on Earth. For example, Cassini has its images open almost immediately through the raw files link… while ESA makes us wait (and still does) while they release “official” images and other reports to the press. The Cassini method is far greater an option as freelance imagers will get color composites up and available hours after an encounter while you may wait weeks for the official imaging team to get around to making color composites for public consumption. I fear the latter will be true of Messenger (especially as Mercury is not expected to be an overly colorful place), but most US based planetary missions have been great about sharing the wealth practically in real time… hopefully Messenger follows the trend.
So enjoy this for now — as stated by JRehling at unmannedspaceflight, “The best Mercury image in mankind’s history — for another week.”