Images from NASA’s MESSENGER spacecraft reveal previously undetected cliff-like landforms on Mercury that scientists believe must be geologically young, which means that the innermost planet is still contracting and that Earth is not the only tectonically active planet in our solar system, as previously thought.
Following its historic first-ever flyby of Pluto, NASA’s New Horizons mission has received the green light to fly onward to an object deeper in the Kuiper Belt, known as 2014 MU69. The spacecraft’s planned rendezvous with the ancient object — considered one of the early building blocks of the solar system — is 1 January 2019.
Japan’s Akatsuki spacecraft got another shot at Venus after a main engine failure during a crucial orbital-insertion burn meant it zipped past the planet on its first attempt in December 2010. The probe spent five years orbiting the Sun so it could catch up with Venus to try again on 7 December. The successful nail-biting manoeuvre is being celebrated by NASA scientists, eager to learn more about the atmosphere and climate of Earth’s enigmatic sister planet.
From possible ice volcanoes to twirling moons, NASA’s New Horizons science team is discussing more than 50 exciting discoveries about Pluto at this week’s 47th Annual Meeting of the American Astronomical Society’s Division for Planetary Sciences. The two cryovolcano candidates are large features measuring tens of miles across and several miles high.
The New Horizons team described a wide range of findings about the Pluto system in its first research paper published today — just three months after NASA’s historic first exploration of the dwarf planet. New Horizons has revealed a degree of diversity and complexity on Pluto and its moons that few expected in the frigid outer reaches of the solar system.
A new close-up image of Pluto from New Horizons reveals a vast, craterless plain that appears to be no more than 100 million years old. This frozen region is north of Pluto’s icy mountains, in the centre-left of the heart feature, informally named “Tombaugh Regio” (Tombaugh Region) after Clyde Tombaugh, who discovered Pluto in 1930.
What a difference 20 million miles makes! Images of Pluto from NASA’s New Horizons are growing in scale as the spacecraft approaches its mysterious target. The new images, taken May 8th-12th using a powerful telescopic camera and downlinked last week, reveal more detail about Pluto’s complex and high contrast surface.