World Bulletin / News Desk
NASA's Mars rover Curiosity, dispatched to determine if the planet most like Earth in the solar system could have supported microbial life, has taken on a second job - moonlighting as an astronomer.
Last week, Curiosity outfitted its high-resolution camera with protective filters and took pictures of the sun as Phobos, one of Mars' two small moons, sailed by.
It was a tricky shoot. Phobos and its sister moon Deimos are closer to Mars than our moon is to Earth, so they shoot across the sky relatively quickly. Phobos takes less than eight hours to circle Mars. Deimos takes about 30 hours to make the trip.
Last Thursday, the moons started to cross paths.
"Phobos grazed the edge of the sun, as seen from Curiosity. We had basically a partial eclipse," astronomer Mark Lemmon, with Texas A&M University, told reporters during a conference call on Wednesday.
The rover took more than 600 images with its left and right cameras, about 100 of which captured some part of the eclipse. Not all the pictures have been radioed back to Earth.
Curiosity has a partner in the project. From the other side of the planet, the rover Opportunity was expected to try to shoot the eclipse on Wednesday.
Aside from pretty pictures, the images should help scientists learn more about Mars' internal structure. Like Earth's moon, Mars' moons have some gravitational pull that slightly change the planet's shape.
"That in turn changes the moons' orbits -- Phobos is slowing down, Deimos is speeding up, like our moon," Lemmon said. "This is something that happens very slowly over time."
In 10 million to 15 million years, Phobos is expected to be so close to Mars that it will be torn apart by the planet's gravity.
The moons' passages by the sun, captured by NASA's rovers, help scientists nail down their orbits and determine how fast they are changing. That information in turn is used to assess how much Mars is deformed as the moons go by.
Curiosity resumed skywatching on Tuesday, when both moons passed overhead.
"This was a really hard thing to do. The timing was very precise," Lemmon said.
The next Martian eclipses will take place in about 11 months. By then, Curiosity should be in a better vantage point.
The rover's eventual science target is a three-mile- (5 km) high mound of sediment rising from the floor of the Gale Crater impact basin where Curiosity landed six weeks ago.
Searches for oncoming storms will display information such as maps, forecasts, reminders and preparedness instructions
New service unveiled as survey finds Americans having hard time navigating smartphone etiquette
Turkcell, Vodafone and Avea bid total of over €1.14 billion for the right to use frequencies on the new network
Petition 'will present at least two substantial questions concerning design-patent liability and damages'
The Istanbul Electric Tram and Tunnel Company plans to launch one solar-powered bus on Thursday and several more in the coming days
Roughly 70 million tonnes of fibres are traded globally per year, but nearly two thirds are made from non-renewable products like petroleum and natural gas.
Researchers havfe said that the flaw leaves data stored by apps vulnerable with almost every category of app considered vulnerable
SpaceX revealed Monday that it is building a test track for the Hyperloop, a concept for ultra-fast ground transport the company’s CEO, Elon Musk, unveiled.
Biologists have created chicken embryos with dinosaur-like faces by tinkering with the molecules that build the birds' beaks.
Product available for pre-order in nine countries but devices won’t ship for weeks.
Nobel Prize-winning scientists' discovery can be manufactured cheaper thanks to Nanografi process.
Most industry experts expect the first product of 5G technology in the run-up to the Tokyo Olympics in 2020.
The slowdown in the rate of rising temperatures, from faster gains in the 1980s and 1990s, has puzzled scientists because heat-trapping greenhouse gas emissions
The discovery challenges currently held theories that black holes and their host galaxies grew in relative lockstep over the eons.
Australian researchers are developing the new way to have a final product for Boeing Co, Airbus Group NV, very quickly than now. 3D printing can cut production times for components from three months to just six days.
Bogachev is charged in the United States with running a computer attack network called GameOver Zeus that allegedly stole more than $100 million from online bank accounts.