Wednesday, 24 April, 2019


Hayabusa-2: Japan's rovers ready for touchdown on asteroid

Illustration of Rover-1A and Rover-1B from MINERVA-II1 as they explore the surface of Ryugu Illustration of Rover-1A and Rover-1B from MINERVA-II1 as they explore the surface of Ryugu
Kristine Garrett | 24 September, 2018, 03:37

Next month, Hayabusa2 will deploy an "impactor" that will explode above the asteroid, shooting a 2-kg (4-lb.) copper object into the surface to blast a crater a few meters in diameter.

The solar panelled-powered rovers move by "hopping" because the extremely weak gravity on the asteroid makes rolling hard. "I want to see images of space as seen from the surface of the asteroid", he said. "This is probably due to the rotation to Ryugu, and MINERVA-II1 is now on the far side of the asteroid".

"Therefore, this hopping mechanism was adopted for moving across the surface of such small celestial bodies".

Beneath their desolate surface, asteroids are believed to contain a rich treasure-trove of information about the formation of the solar system billions of years ago. If they land successfully, they will become the first ever mobile robots to conduct observations on an asteroid.

Once they have reached their destination, the robotic rovers will then have to move on the asteroid Ryugu by making large jumps, a solution considered safer than rolling themselves on the space rock's surface that appears very uneven. The rovers are also equipped with temperature gauges, optical sensors as well as an accelerometer and a set of gyroscopes.

Hayabusa2, launched in December 2014, is due to return to Earth in late 2020.

The rovers are stored in drum-shaped container at the base of the Hayabusa-2 "mothership". It is a "C-type" asteroid which is the most common class of asteroids.

"From a distance, Ryugu initially appeared round, then gradually turned into a square before becoming a lovely shape similar to fluorite - known as the "firefly stone" in Japanese", the space agency said in a statement. To date, there has been only one soft touchdown on an asteroid, and that was NASA's Near Earth Asteroid Rendezvous-Shoemaker spacecraft, which landed on the asteroid Eros in 2001.

Recommended

loading...
...
  • Shaqiri substitution not easy for Klopp

    Shaqiri substitution not easy for Klopp

    If it was me, I'd be fuming after the display he put in during that first half". "Offensively, it was a good idea, but we have to work a bit more on that".
    Arsenal's ‘great’ Europa League start excites Alex Iwobi

    Arsenal's ‘great’ Europa League start excites Alex Iwobi

    Having made such a good account of themselves, Everton were undone by the first moment of striking quality from Arsenal . The Gunners have endured an indifferent start to the season, winning three and lose two of their first five games.
    Ted Cruz Attacks Beto O'Rourke for Denouncing Police Murder

    Ted Cruz Attacks Beto O'Rourke for Denouncing Police Murder

    Each candidate displayed the sort of strengths that have earned them the praise or enmity of the opposing camp. Early on, for instance, the candidates squared off on gun control legislation and the 2nd Amendment.
  • Pats' Josh Gordon (hamstring) draws questionable tag for Sunday night

    Pats' Josh Gordon (hamstring) draws questionable tag for Sunday night

    But according to Brady himself, the New England starting quarterback has plans to play well into his 40's. Jacoby was a good friend of mine too. "I think Josh is a smart kid", he said.
    Michael Jordan donates $2 million for Florence relief and recovery aid

    Michael Jordan donates $2 million for Florence relief and recovery aid

    Wilmington, just down the coast, remained nearly completely cut off by flooding from the Cape Fear River and earlier storm surges. Human and animal waste is mixing with the swirling floodwaters, which have killed about 1.7 million chickens on poultry farms.
    Christine Blasey Ford Confirms Intent to Testify Against Kavanaugh for Judiciary Committee

    Christine Blasey Ford Confirms Intent to Testify Against Kavanaugh for Judiciary Committee

    President Donald Trump has defended his Supreme Court nominee and questioned why Ford did not report the incident to police. Republican senators had said it would be inappropriate for a witness to dictate who would be called.
  • Gronk threatened to retire if Pats traded him to Lions

    When Gronkowski discovered he could be traded to Detroit that week, he threatened to retire rather than go to the Lions. Ultimately, he made a decision to return to the Patriots, who later restructured his contract in an act of good will.
    Willian Starts - Chelsea Team vs West Ham Confirmed

    Willian Starts - Chelsea Team vs West Ham Confirmed

    Anderson was replaced by Robert Snodgrass for the last 16 minutes as the chances became more sporadic for the home side. After the break West Ham continued to frustrate Chelsea , while Yarmolenko curled a shot narrowly over.
    Crude oil steady as official USA  inventories fall

    Crude oil steady as official USA inventories fall

    Although many buyers have scaled back purchases, it is unclear how easily other producers can compensate for any lost supply. Opec and oil producers outside the group, including Russian Federation , will meet on Sunday to revise oil production quotas.
  • Meghan reveals ‘something blue’ she wore at royal wedding

    Meghan, 37, collaborated on the cookbook, "Together: Our Community Cookbook", with a group of female Grenfell Fire survivors. The outfits Prince Harry and Meghan Markle wore at their wedding will go on public display from October 26 at Windsor Castle.
    Terror Attack On Military Parade In Iran Leaves 25 Dead, 60 Wounded

    Terror Attack On Military Parade In Iran Leaves 25 Dead, 60 Wounded

    Her words came just a day after the U.S. presidential lawyer, Rudy Giuliani, said that the Iranian government will be toppled. Iran has also been hit by sporadic street protests over economic hardship that have taken on anti-government overtones.
    Karl-Anthony Towns getting $190 million extension from Wolves

    Karl-Anthony Towns getting $190 million extension from Wolves

    Butler told Thibodeau that he would like to be traded before reporting for Timberwolves media day on Monday. They are the three teams he is said to be willing to sign a max contract extension with if he is traded .

ME investigates restaurant for using marijuana on lobsters before cooking them ME  investigates restaurant for using marijuana on lobsters before cooking them The business, Charlotte's Legendary Lobster Pound in Southwest Harbor, is owned by a registered medical marijuana caregiver. Gill plans to use the new method at customers' requests, and then build a larger tank to sedate multiple lobsters at once.

Bills stun Vikings 27-6 in rookie Allen's 1st road start But Buffalo, which was a 16.5-point underdog in the game, did the seemingly impossible, soundly dispatching Kirk Cousins and Co. The ball was bobbled by running back Latavius Murray and linebacker Matt Milano picked it off while on his back.

7 takeaways from 49ers loss to Chiefs 7 takeaways from 49ers loss to Chiefs Before the injury, Garoppolo was 20-of-30 for 251 yards with two touchdowns and no interceptions for a passer rating of 114.7. Garoppolo easily could have stepped out of bounds, but instead he was crushed on his throwing shoulder and had to leave.

Google Pixel 3 & Pixel 3 XL Leak In Highest-Resolution Render Yet Google Pixel 3 & Pixel 3 XL Leak In Highest-Resolution Render Yet The Pixel 3 XL is seen to have a deep notch, which some users would consider ugly given the lack of symmetry in design. Alos, the Pixel 3 is tipped to measure 145.6×68.2×7.9mm, while the Pixel 3 XL is tipped to measure 158×76.6×7.9mm.

Rodgers concerned knee could get worse Rodgers concerned knee could get worse We'll see what happens to his ADP, which is currently sitting in the 8th round, but he now looks like just a later-round flier. Over the next seven plays, he drew pass interference calls on Packers defenders to move down to the Green Bay 2-yard line.

Man found alive inside capsized Tanzanian ferry as death toll reaches 209 Man found alive inside capsized Tanzanian ferry as death toll reaches 209 He was among eight engineers aboard the ferry when it capsized, and he'd locked himself inside the engine room since Thursday. With a surface area of 70,000 sq km (27,000 sq miles), the oval-shaped Lake Victoria is shared by Tanzania, Uganda and Kenya.

UK's Labour Party ponders supporting new Brexit referendum UK's Labour Party ponders supporting new Brexit referendum At today's meeting, Ms Duffield said: "The motion to censure me nearly worked". "We don't know what it would be", he told the BBC. It calls for Britain to leave the EU but remain in the bloc's customs union with "full access" to the EU's huge single market.

Strawberries from Australia being checked for needles Strawberries from Australia being checked for needles It is a response to a crisis in the country that has seen people hide needles inside strawberries and other fruit . Consumers in Queensland were the first to report finding needles embedded inside strawberries.

Fourth Witness To Alleged Kavanaugh Assault Says It Didn't Happen Fourth Witness To Alleged Kavanaugh Assault Says It Didn't Happen Kavanaugh also implored the Judiciary Committee to hold a hearing the following day so he could clear himself. Other Republicans scoffed at Ford's willingness to accept the committee's request to tell her story.

Tehran warns UAE over 'offensive remarks' on Ahvaz attack Tehran warns UAE over 'offensive remarks' on Ahvaz attack Giuliani has made similar comments before on Iran , and the State Department has said he does not speak for the administration. The Arab Struggle Movement for the Liberation of Ahwaz is classified as a terrorist group by the Iranian government.

Tropical Storm Kirk forms off African coast Tropical Storm Kirk forms off African coast At 5 o'clock Sunday morning, Kirk was 2,500 miles from BVI and was moving in a westerly direction at 18 miles per hour. Overall, this storm is expected to continue moving mainly to the west due to a sub-tropical ridge north of it.

Walmart urges Trump administration to roll back new tariffs on Chinese imports Walmart urges Trump administration to roll back new tariffs on Chinese imports Currently, its products are not on USA tariff lists and the American chip sets it buys are not subject to Chinese tariffs either. That followed tariffs on $50 billion in goods that Trump had already imposed on Beijing, which retaliated in kind.

Tiger Woods is this close to winning Tour Championship Tiger Woods is this close to winning Tour Championship Also vintage was Woods's reception, an outpouring chorus of support that greeted and trailed him on either end of every shot. Woods was sensational on the front nine, carding six birdies in his first seven holes to open up a sizable lead on the field.

Republican Paul Gosar's own siblings star in Democrat campaign ad Republican Paul Gosar's own siblings star in Democrat campaign ad The congressman's brother David caught the eye of Brill's campaign through his criticism of Paul Gosar on Twitter . It is not the first time the Gosar family's political disagreements have spilled out in the open.

Manchester United's Premier League woes continue, held to draw by lowly Wolves Manchester United's Premier League woes continue, held to draw by lowly Wolves After a promising performance in midweek against Young Boys it was great to see Fred score his first Manchester United goal. Mourinho was praising of Wolves but not of his own who he felt were below par.