Newest NASA Mars Orbiter Demonstrates Relay Prowess
The newest node in NASA's Mars telecommunications network -- a radio aboard the MAVEN orbiter custom-designed for data links with robots on the surface of Mars -- handled a copious 550 megabits during its first relay of real Mars data.
MAVEN's Electra UHF radio received the transmission from NASA's Curiosity Mars rover on Nov. 6, using an adaptive data rate as the orbiter passed through the sky over the rover. The data that MAVEN relayed to NASA's Deep Space Network of large dish antennas on Earth included several images of terrain that Curiosity has been examining at the base of Mars' Mount Sharp. The test also included relaying data to Curiosity from Earth via MAVEN.
Mind-blowing Meteor Shower on Mars During Comet Flyby, Say NASA Scientists
“Thousands of meteors per hour would have been visible — truly astounding to the human eye.” That’s Nick Schneider’s description of what you and I would have seen standing on Mars during Comet Siding Spring’s close flyby last month. “It would have been really mind-blowing,” he added. Schneider is instrument lead for MAVEN’s Imaging Ultraviolet Spectrograph (IUVS). He and a group of scientists who work as lead investigators for instruments on the MAVEN and Mars Reconnaissance Orbiter (MRO) spacecraft shared the latest results from the comet flyby during a media teleconference earlier today. There were many surprises. Would we expect anything less from a comet?
An Insider's Biography of a Celebrity Mars Rover
The chief engineer for Curiosity offers a peek at the NASA rover’s tumultuous rise to stardom in a new tell-all book. Back in 2008, Curiosity—technically called the Mars Science Laboratory, or MSL—was being heavily derided for getting behind schedule and going over budget. The mission was originally pitched to NASA as a $1.6-billion spacecraft, and it was supposed to launch in 2009. But a variety of technical hurdles caused the launch schedule to slip to 2011, and costs ballooned to $2.5 billion. According to Rob Manning, the mission’s chief engineer, young Curiosity’s troubles can be traced back to its most celebrated feature: the sky crane landing system.
Undergrad helps develop method to detect water on Mars
Washington State University
A Washington State University undergraduate has helped develop a new method for detecting water on Mars. Her findings appear in Nature Communications, one of the most influential general science journals.
Kellie Wall, 21, of Port Orchard, Wash., looked for evidence that water influenced crystal formation in basalt, the dark volcanic rock that covers most of eastern Washington and Oregon. She then compared this with volcanic rock observations made by the rover Curiosity on Mars’ Gale Crater.
“This is really cool because it could potentially be useful for not only the study of rocks on Earth but on Mars and other planets,” said Wall.
Look at what two years on Mars did to the Curiosity Rover
NASA's Curiosity rover just recently finished its second year exploring Mars, and the red planet's harsh environment has taken its toll. Rocky terrain, tricky sand dunes, and exposure to Martian dust storms have left the SUV-sized robot looking a little worse for wear as it continues its march towards its eventual goal, Mount Sharp.
Below is a before-and-after look at a variety of instruments and features on Curiosity and the wear they've endured during the rover's first two years, made from images uploaded by NASA's Jet Propulsion Laboratory. Each image is either from the MAHLI imager or the Mastcam, and is also labeled with the Sol number (sol = one Martian solar day, the mission is currently on Sol 724) during which each image was taken.
Curiosity wheel damage: The problem and solutions
The Planetary Society
There are holes in Curiosity wheels. There have always been holes -- the rover landed with twelve holes deliberately machined in each wheel to aid in rover navigation. But there are new holes now: punctures, fissures, and ghastly tears. The holes in Curiosity's wheels have become a major concern to the mission, affecting every day of mission operations and the choice of path to Mount Sharp. Yet mission managers say that, so far, the condition of the wheels has no effect on the rover's ability to traverse Martian terrain. If the holes are not causing problems, why the rerouting? Is the wheel damage a big deal or not?
Curiosity Rover on Mars Stalled by 'Hidden Valley' Sand Trap
NASA's Mars rover Curiosity may have to choose a new route to the base of a huge Red Planet mountain.
The 1-ton Curiosity rover had been heading for Mount Sharp — a 3.4-mile-high (5.5 kilometers) mountain in the center of Mars' Gale Crater — via "Hidden Valley," a sandy swale that's about the length of a football field. But Curiosity turned back shortly after entering the valley's northeastern end earlier this month, finding the sand surprisingly slippery, NASA officials said.
"We need to gain a better understanding of the interaction between the wheels and Martian sand ripples, and Hidden Valley is not a good location for experimenting," Curiosity project manager Jim Erickson, of NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, said in a statement.
As Comet C/2013 A1 Siding Spring hurtles toward Mars, NASA is taking steps to protect its Martian orbiters. The plan? Use the planet itself as a shield between the spacecraft and the comet’s potentially dangerous debris.
As part of its long-term Mars Exploration Program, NASA currently has two spacecraft orbiting the Red Planet, Mars Reconnaissance Orbiter (MRO) and Mars Odyssey, with Mars Atmosphere and Volatile Evolution (MAVEN) set to arrive in late September. Teams of scientists at the University of Maryland, the Planetary Science Institute, and NASA’s Jet Propulsion Lab (JPL) have used data from both Earth-based and space telescopes to model Siding Spring’s journey through the inner solar system, and determined that there is no risk of the comet colliding with Mars. However, at its closest approach to Mars on October 19, 2014, Siding Spring will come within 82,000 miles of the Red Planet, which is about a third of the distance from Earth to the Moon. The closest comets ever to whiz by Earth have been at least ten times more distant.
With the ongoing success of the Mars Science Laboratory's Curiosity rover, America's imagination has once again been captured by our nearest planetary neighbor.
To celebrate the new National Geographic book Mars Up Close, find out about the latest discoveries from the Red Planet as a panel of distinguished space scientists and Mars experts involved in current Mars exploration share what we’ve learned from Curiosity and the other Mars rovers.
All You Need to Know About the Mars 2020 Rover in One Infographic
NASA has finally settled on the seven instruments its Mars 2020 rover will be carrying when embarking on its journey to the Red Planet about six years from now.
These instruments, which were chosen from a total of 58 proposed ones, are expected to help the Mars 2020 rover explore its target planet and gain a better understanding of its makeup.
Thus, the instruments will work together to collect information concerning Mars' landscapes, mineralogy, and atmosphere, researchers with NASA explain.
This rock encountered by NASA's Curiosity Mars rover is an iron meteorite called "Lebanon," similar in shape and luster to iron meteorites found on Mars by the previous generation of rovers, Spirit and Opportunity. Lebanon is about 2 yards or 2 meters wide (left to right, from this angle). The smaller piece in the foreground is called "Lebanon B."
This view combines a series of high-resolution circular images taken by the Remote Micro-Imager (RMI) of Curiosity's Chemistry and Camera (ChemCam) instrument with color and context from rover's Mast Camera (Mastcam). The component images were taken during the 640th Martian day, or sol, of Curiosity's work on Mars (May 25, 2014).
The imaging shows angular shaped cavities on the surface of the rock. One possible explanation is that they resulted from preferential erosion along crystalline boundaries within the metal of the rock. Another possibility is that these cavities once contained olivine crystals, which can be found in a rare type of stony-iron meteorites called pallasites, thought to have been formed near the core-mantle boundary within an asteroid.
Martian salts must touch ice to make liquid water, study shows
University of Michigan
In chambers that mimic Mars' conditions, University of Michigan researchers have shown how small amounts of liquid water could form on the planet despite its below-freezing temperatures.
Liquid water is an essential ingredient for life as we know it. Mars is one of the very few places in the solar system where scientists have seen promising signs of it – in gullies down crater rims, in instrument readings, and in Phoenix spacecraft self portraits that appeared to show wet beads on the lander's leg several years ago.
No one has directly detected liquid water beyond Earth, though. The U-M experiments are among the first to test theories about how it could exist in a climate as cold as Mars' climate.
The researchers found that a type of salt present in Martian soil can readily melt ice it touches – just like salts do on Earth's slippery winter walkways and roads. But this Martian salt cannot, as some scientists suggested, form liquid water by sucking vapor out of the air through a process called deliquescence.
The adventurous primate Curious George is heading to Mars for the first time in a special TV episode of the cartoon airing Monday (May 19).
While Curious George has been to space before, this is the first time he is exploring the Red Planet. In the episode, "Red Planet Monkey," George needs to help engineers on Earth figure out what is making the rover's controls stick. The primate finds himself on an amazing adventure to Mars with his friend, the Man with the Yellow Hat.
Mars Rover Heads Uphill After Solving 'Doughnut' Riddle
Researchers have determined the now-infamous Martian rock resembling a jelly doughnut, dubbed Pinnacle Island, is a piece of a larger rock broken and moved by the wheel of NASA's Mars Exploration Rover Opportunity in early January.
Only about 1.5 inches wide (4 centimeters), the white-rimmed, red-centered rock caused a stir last month when it appeared in an image the rover took Jan. 8 at a location where it was not present four days earlier.
More recent images show the original piece of rock struck by the rover's wheel, slightly uphill from where Pinnacle Island came to rest.
NASA's Curiosity Mars rover looks to 'jump' sand dune
The Curiosity Mars rover is to try to drive over a one metre-high dune.
The sand bank is currently blocking the robot's path into a small valley and a route with fewer of the sharp rocks that lately have been making big dents in the vehicle's aluminium wheels.
US space agency engineers will take no risks, however. The rover will be commanded initially to climb only part way up the dune to see how it behaves.
The team is mindful that NASA's Spirit rover was lost in a sand trap in 2009.
And the Opportunity rover, which has just celebrated 10 working years on the planet, very nearly went the same way in 2005 when it became stuck for several weeks in a deep dirt pile later dubbed "Purgatory Dune".