Lucy in the sky with asteroids

Well done to the data team at The Economist, having to visualise a 12-year journey of a space probe as it makes a flying visit to eight different asteroids. They’ve made a very complicated journey look quite straightforward and elegant.

A probe intended to study the Trojan asteroids takes offThe Economist
Lucy, as this planetary-ancestor-investigating mission is dubbed, after a well-known specimen of Australopithecus, an early hominid, blasted off from Cape Canaveral, in Florida, and will now follow one of the most complex paths around the solar system yet devised by NASA’s orbital navigators. The diagram which shows Lucy’s journey, indicates how the craft will first pick up speed using two velocity-boosting fly-bys of Earth. It will then head for the Greek camp, passing, for a practice run at observation, by way of a convenient main-belt asteroid that the mission’s scientists have named Donaldjohanson, in honour of the discoverer of Lucy the Australopithecine. When it arrives at L4 in 2027, it will encounter five bodies: Eurybates and its tiny satellite Queta, Polymele, Leucus and Orus. Having examined each of these, it will leave the Greek camp in 2028 and cross, via another velocity-boosting fly-by of Earth, to the Trojan camp at L5. Its final planned encounter, when it reaches L5 in 2033, is with Patroclus and Menoetius.

Fortunately, they were able to call on the team at NASA’s Scientific Visualisation Studio for help.

Lucy mission trajectoryNASA Scientific Visualization Studio
Lucy will launch in October 2021 and, with boosts from Earth’s gravity, will complete a twelve-year journey to eight different asteroids — a Main Belt asteroid and seven Jupiter Trojans, the last two members of a “two-for-the-price-of-one” binary system. Lucy’s complex path will take it to both clusters of Trojans and give us our first close-up view of all three major types of bodies in the swarms (so-called C-, P- and D-types).

Photos of our world — and elsewhere

Some incredible images from around the place.

Getty Images announces winners of annual photojournalism grant
Weddings in the Democratic Republic of Congo, and the conflicting beauty and isolation of an Aerotropolis are just some of the images that winners of the Getty Images reportage grant have explored.

Photobox Instagram photography awards shortlist
Shortlisted images in the running to be crowned Photobox Instagram photograph of the year range from furry friends to the Holi festival to the meaning of love. Judges, including the Guardian’s former picture editor Eamonn McCabe, have whittled down 180,000 submissions to unearth a shortlist that celebrates the best of social media.

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Parallel lives: matching portraits from South and North Korea
Jones said of his photos: “You can put the pictures side by side but the people can’t stand side by side in real life and there’s something inherently captivating about that.”

And something from much further afield.

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Hayabusa 2 rovers send new images from Ryugu surface
One of the principal concerns for deployment was Ryugu’s rougher-than-expected surface, which is carpeted with boulders and has very few smooth patches. The 1kg rovers are equipped with wide-angle and stereo cameras to send back pictures. Spine-like projections from the edges of the hoppers are sensors that will measure surface temperatures on the asteroid.