Tiny robots send home 1st photos from asteroid's surface
MINERVA-II-1 rovers sent confirmation of safe landing on Ryugu and 1st successful hop Saturday
Two tiny robots dispatched to the surface of an asteroid from a Japanese spacecraft have sent home their first photos.
The Japan Space Exploration Agency confirmed Saturday that the two Minerva-II-1 rovers had landed successfully after being released from the Hayabusa2 spacecraft a day earlier.
"The two rovers are in good condition and are transmitting images and data," JAXA said in a blog post. "Analysis of this information confirmed that at least one of the rovers is moving on the asteroid surface."
Images sent back by the rovers show the asteroid's gravelly, rocky surface, and some are blurry because the robot that took them was "hopping" at the time.
"I cannot find words to express how happy I am..." Y.T.<br><br>The MINERVA-II1 rovers have successfully landed on asteroid Ryugu, snapped photos & taken the first successful hop! Have a read about this world first and hear the comments from our Project Members.<a href="https://t.co/xtoIcWIT5X">https://t.co/xtoIcWIT5X</a> <a href="https://t.co/AOYDhhBDe2">pic.twitter.com/AOYDhhBDe2</a>—@haya2e_jaxa
The two rovers — each about the size of a small cookie tin, 18 centimetres in diameter and seven cm high — are to capture images of the asteroid and measure surface temperatures before a larger rover and a lander are released later. The rovers move by "hopping" up to 15 metres at a time because the extremely weak gravity on the asteroid makes rolling difficult. They can continue jumping as long as their solar panels and power last, JAXA said.
The spacecraft is set to release a German-French lander called MASCOT carrying four observation devices in early October and a bigger rover called Minerva-II-2 next year.
Hayabusa2, launched in December 2014, is due to return to Earth in late 2020.
The spacecraft arrived near the asteroid, about 280 million kilometres from Earth, in June. Ryugu's orbit is between Earth's orbit and that of Mars.
Photo taken by Rover-1B on Sept 21 at ~13:07 JST. It was captured just after separation from the spacecraft. Ryugu's surface is in the lower right. The misty top left region is due to the reflection of sunlight. 1B seems to rotate slowly after separation, minimising image blur. <a href="https://t.co/P71gsC9VNI">pic.twitter.com/P71gsC9VNI</a>—@haya2e_jaxa
With files from The Associated Press