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Thanks; and here is today's Pluto Picture Of The Day; I thought it was a great artist's conception!MargaritaMc wrote:Thank you, Orin. I'll post the exact URL here http://pluto.jhuapl.edu/overview/piPerspective.php to make it easier to jump to it and then go to read the PI archive!
Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Steve Gribben.
It's great! And I'd never even heard of the Pluto Picture of the Day before. (I've probably not been paying enough attention to this thread. Sorry.) The archive has some splendid and very informative images. I'm grateful to you for getting me to know about it!orin stepanek wrote:
Thanks; and here is today's Pluto Picture Of The Day; I thought it was a great artist's conception!
Oops; I didn't mean for these images to change every day!orin stepanek wrote:Thanks; and here is today's Pluto Picture Of The Day; I thought it was a great artist's conception!MargaritaMc wrote:Thank you, Orin. I'll post the exact URL here http://pluto.jhuapl.edu/overview/piPerspective.php to make it easier to jump to it and then go to read the PI archive!Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Steve Gribben.
NASA:On Pluto’s Doorstep, NASA’s New Horizons Spacecraft Awakens for Encounter
After a voyage of nearly nine years and three billion miles —the farthest any space mission has ever traveled to reach its primary target – NASA’s New Horizons spacecraft came out of hibernation today for its long-awaited 2015 encounter with the Pluto system.
New Horizons Mission Operations Manager Alice Bowman and operations team member Karl Whittenburg watch the screens for data confirming that the New Horizons spacecraft had transitioned from hibernation to active mode on Dec. 6.
Operators at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md., confirmed at 9:53 p.m. (EST) that New Horizons, operating on pre-programmed computer commands, had switched from hibernation to “active” mode. Moving at light speed, the radio signal from New Horizons – currently more than 2.9 billion miles from Earth, and just over 162 million miles from Pluto – needed four hours and 26 minutes to reach NASA’s Deep Space Network station in Canberra, Australia.
“This is a watershed event that signals the end of New Horizons crossing of a vast ocean of space to the very frontier of our solar system, and the beginning of the mission’s primary objective: the exploration of Pluto and its many moons in 2015,” said Alan Stern, New Horizons principal investigator from Southwest Research Institute, Boulder, Colo.
CSIRO BLOG: Waking up to new horizons
I guess we all love to sleep in on a Sunday morning, maybe just snoozing under the doona, laying there for a few hours before getting up for a late brunch. Ah! Luxury.
On Sunday 7th December 2014, the New Horizons spacecraft, 5 billion kilometres away from the warmth of Earth, had little time to sleep in. It was ‘wake up’ day. The final awakening from hibernation for the next 2 years until well after its encounter with rapidly approaching dwarf planet, Pluto, set for the 14th July 2015.
Waiting back on Earth to hear the spacecraft’s morning ‘alarm’ go off was the giant 70 metre antenna dish at the CSIRO-managed, Canberra Deep Space Communication Complex – Deep Space Station 43 (DSS43).
Image: CDSCC/CSIRO
Covering a distance of nearly 4.8 billion kilometres, New Horizons signal was travelling through space at the speed of light, telling home that it had awoken from final hibernation...
The spacecraft’s transmission was received 4 hours and 26 minutes later at DSS43, with NASA confirming, at 1.53pm (AEDT), the news that the New Horizons team wanted to hear, “It’s Alive!".
FM14 New Horizons on Pluto’s doorstep PressWorkshopClick to play embedded YouTube video.
American Geophysical Union (AGU)
Published on 18 Dec 2014
NASA’s New Horizons spacecraft has begun its long-awaited, historic encounter with Pluto, entering the first of several approach phases that will culminate with the first close-up flyby of the Pluto system six months from now.Click to play embedded YouTube video.
“NASA’s first mission to distant Pluto will also be humankind’s first close up view of this cold, unexplored world in our solar system,” said Jim Green, director of NASA’s Planetary Science Division at NASA Headquarters, Washington. “The New Horizons team worked very hard to prepare for this first phase, and they did it flawlessly.”
New Horizons launched in January 2006 and, after a voyage of more than 3 billion miles, will soar close to Pluto, inside the orbits of its five known moons, this July 14. The fastest spacecraft ever launched, New Horizons awoke from its final hibernation period in early December. Since then, the mission’s science, engineering and spacecraft operations teams have configured the piano-sized probe for distant observations of the Pluto system, starting with a long-range photo shoot that begins Jan. 25. ...
The rest of the blog post is fascinatingPlanetary Society Blog:Talking to Pluto is hard! Why it takes so long to get data back from New Horizons
Posted by Emily Lakdawalla
2015/01/30 15:53 UTC
As I write this post, New Horizons is nearing the end of a weeklong optical navigation campaign. By taking photos of the Pluto system at regular intervals, New Horizons' navigators can precisely measure the observed positions of Pluto and its moons with respect to background stars, and determine the spacecraft's position. The last optical navigation images in the weeklong series will be taken tomorrow, but it will likely take two weeks or more for all the data to get to Earth. Two weeks! Why does it take so long? It's not like it's all that much data: 10 full-resolution LORRI images per day.
The short answer to that question is: Pluto is far away -- very far away, more than 30 times Earth's distance from the Sun -- so New Horizons' radio signal is weak. Weak signal means low data rates: at the moment, New Horizons can transmit at most 1 kilobit per second. (Note that spacecraft communications are typically measured in bits, not bytes; 1 kilobit is only 125 bytes.) Even at these low data rates, only the Deep Space Network's very largest, 70-meter dishes can detect New Horizons' faint signal.
...
Yes, nice article, but this means that even during the exciting flyby of Pluto the return is going to be soooo sloooooooow. Those sitting on the edge of their seats waiting for new photos are going to get sore bums mum.MargaritaMc wrote:The rest of the blog post is fascinatingPlanetary Society Blog:Talking to Pluto is hard! Why it takes so long to get data back from New Horizons
Posted by Emily Lakdawalla
Margarita
NASA’s New Horizons spacecraft returned its first new images of Pluto on Wednesday, as the probe closes in on the dwarf planet. Although still just a dot along with its largest moon, Charon, the images come on the 109th birthday of Clyde Tombaugh, who discovered the distant icy world in 1930. ...
New Horizons was more than 126 million miles (nearly 203 million kilometers) away from Pluto when it began taking images. The new images, taken with New Horizons’ telescopic Long-Range Reconnaissance Imager (LORRI) on Jan. 25 and Jan. 27, are the first acquired during the spacecraft’s 2015 approach to the Pluto system, which culminates with a close flyby of Pluto and its moons on July 14. ...
Over the next few months, LORRI will take hundreds of pictures of Pluto, against a starry backdrop, to refine the team’s estimates of New Horizons’ distance to Pluto. As in these first images, the Pluto system will resemble little more than bright dots in the camera’s view until late spring. However, mission navigators can still use such images to design course-correcting engine maneuvers to direct the spacecraft for a more precise approach. The first such maneuver based on these optical navigation images, or OpNavs, is scheduled for March 10. ...
Closing in on Pluto at about 31,000 mph, New Horizons already has covered more than 3 billion miles since it launched on Jan. 19, 2006. Its journey has taken it past each planet’s orbit, from Mars to Neptune, in record time, and it is now in the first stage of an encounter with Pluto that includes long-distance imaging as well as dust, energetic particle and solar wind measurements to characterize the space environment near Pluto. ...
bystander wrote:NASA Spacecraft Returns New Images of Pluto En Route to Historic Encounter
NASA | JHU-APL | SwRI | New Horizons | 2015 Feb 04NASA’s New Horizons spacecraft returned its first new images of Pluto on Wednesday, as the probe closes in on the dwarf planet. Although still just a dot along with its largest moon, Charon, the images come on the 109th birthday of Clyde Tombaugh, who discovered the distant icy world in 1930. ...
New Horizons was more than 126 million miles (nearly 203 million kilometers) away from Pluto when it began taking images. The new images, taken with New Horizons’ telescopic Long-Range Reconnaissance Imager (LORRI) on Jan. 25 and Jan. 27, are the first acquired during the spacecraft’s 2015 approach to the Pluto system, which culminates with a close flyby of Pluto and its moons on July 14. ...
Over the next few months, LORRI will take hundreds of pictures of Pluto, against a starry backdrop, to refine the team’s estimates of New Horizons’ distance to Pluto. As in these first images, the Pluto system will resemble little more than bright dots in the camera’s view until late spring. However, mission navigators can still use such images to design course-correcting engine maneuvers to direct the spacecraft for a more precise approach. The first such maneuver based on these optical navigation images, or OpNavs, is scheduled for March 10. ...
Closing in on Pluto at about 31,000 mph, New Horizons already has covered more than 3 billion miles since it launched on Jan. 19, 2006. Its journey has taken it past each planet’s orbit, from Mars to Neptune, in record time, and it is now in the first stage of an encounter with Pluto that includes long-distance imaging as well as dust, energetic particle and solar wind measurements to characterize the space environment near Pluto. ...
Everyday It's A Getting Closer
Exactly 85 years after Clyde Tombaugh's historic discovery of Pluto, the NASA spacecraft set to encounter the icy dwarf planet this summer is providing its first views of the small moons orbiting Pluto.[attachment=0]nh_02-18-15[1].png[/attachment]
he moons Nix and Hydra are visible in a series of images taken by the New Horizons spacecraft from Jan. 27-Feb. 8, at distances ranging from about 125 million to 115 million miles (201 million to 186 million kilometers). The long-exposure images offer New Horizons' best view yet of these two small moons circling Pluto which Tombaugh discovered at Lowell Observatory in Flagstaff, Arizona, on Feb. 18, 1930. ...
Assembled into a seven-frame movie, the new images provide the spacecraft's first extended look at Hydra (identified by a yellow diamond ) and its first-ever view of Nix (orange diamond). The right-hand image set has been specially processed to make the small moons easier to see.
These are the first of a series of long-exposure images that will continue through early March, with the purpose of refining the team's knowledge of the moons' orbits. Each frame is a combination of five 10-second images, taken with New Horizons' Long-Range Reconnaissance Imager (LORRI) using a special mode that combines pixels to increase sensitivity at the expense of resolution. At left, Nix and Hydra are just visible against the glare of Pluto and its large moon Charon, and the dense field of background stars. The bright and dark streak extending to the right of Pluto is an artifact of the camera electronics, resulting from the overexposure of Pluto and Charon. As can be seen in the movie, the spacecraft and camera were rotated in some of the images to change the direction of this streak, in order to prevent it from obscuring the two moons. ...
On July 14, NASA’s New Horizons spacecraft will fly past Pluto, offering the first close-up look at that small, distant world and its largest moon, Charon. These denizens of the outer solar system will be transformed from poorly seen, hazy bodies to tangible worlds with distinct features.
Now, the public can help decide what labels will go on the images and maps coming from the flyby. The SETI Institute has announced the launch of its “Our Pluto” campaign, which is soliciting input on how to name features on the surfaces of Pluto and Charon. ...
