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The JunoCam imager aboard NASA’s Juno spacecraft took this shot throughout a 7 June flyby of Ganymede.NASA/JPL-Caltech/SwRI/MSSS

NASA’s Juno spacecraft has captured the primary close-up pictures of Jupiter’s moon Ganymede in additional than 20 years. Juno got here inside 1,038 kilometres of the world, which is greater than Mercury. Extra pictures are on their manner from the spacecraft and can enable scientists to piece collectively a color model of the spectacular portrait of the Jovian satellite tv for pc. “We’re going to take our time earlier than we draw any scientific conclusions, however till then we are able to merely marvel at this celestial marvel,” mentioned Scott Bolton, principal investigator of the Juno mission, in a NASA assertion. Indulge in all of the uncooked pictures as NASA makes them out there on its web site.

house.com | 5 min learn

Spacecraft propelled by lasers may enable us to discover planetary techniques with out ready a number of lifetimes. Researchers suggest that round 100 million particular person lasers on Earth may speed up an ultralight spacecraft to Alpha Centauri inside 20 years. The plan is one other step forwards for the Starshot Breakthrough Initiatives, funded by tech billionaire Yuri Milner, which in 2018 outlined the 100-atom-thick photo voltaic sail that may even be required. “We have already got a number of crafts — Voyager included — [in interstellar space], however it is going to be many human lifetimes earlier than they attain anyplace close to one other star,” says astrophysicist Chathura Bandutunga.

ABC | 4 min learn

Reference: Journal of the Optical Society of America B paper & Nature Materialss paper (from 2018)

COVID-19 coronavirus replace

Most scientists say SARS-CoV-2 in all probability has a pure origin, and was transmitted from an animal to people. Nevertheless, a laboratory leak has not been dominated out, and plenty of are calling for a deeper investigation into the speculation that the virus emerged from the Wuhan Institute of Virology, situated within the Chinese language metropolis the place the primary COVID-19 circumstances had been reported. Nature cuts via the clamour with a sober examination of the arguments for a lab leak, and the extent to which analysis has solutions.

Nature | 11 min learn

For greater than per week, a mean of about 20 million folks have been vaccinated towards COVID-19 day by day in China. After a sluggish begin, the nation now accounts for greater than half of the roughly 35 million folks world wide who obtain a COVID-19 shot every day. Nearly all of the doses are both CoronaVac, produced by Beijing-based firm Sinovac, or the vaccine developed in Beijing by state-owned agency Sinopharm — each of which have been accredited for emergency use worldwide by the World Well being Group. China’s staggering acquire in manufacturing capability may make a big dent in world demand for vaccines. It has already provided 350 million doses of the 2 vaccines to greater than 75 nations.

Nature | 3 min learn

Daily vaccine doses administered: Chart showing China now accounts for nearly 60% of all COVID-19 doses given globally.

Supply: Our World in Information

Options & opinion

The replication disaster gained’t be solved with broad brushstrokes, argues sociologist David Peterson, whose work has revealed why some scientists greet reform efforts with scepticism. A part of the issue is that many reformers come from a slim swathe of academia, corresponding to psychology and social and behavioural sciences. Reformers “have to reveal that they perceive how particular fields function earlier than they push a set of practices”, writes Peterson. “In any other case, efforts may very well be resisted as extensions of forms, reasonably than embraced as routes to extra sturdy analysis.”

Nature | 5 min learn

There’s excellent news for decarbonizing the worldwide economic system: political help is at an all-time excessive, and most carbon emissions come from international locations which have dedicated to achieve ‘internet zero’ by mid-century. However to plan get there, analysts use pc fashions that don’t acknowledge the troublesome trade-offs confronted by choice makers, argue ten climate-policy specialists. They define precisely how insights from political economic system result in 11 ways in which fashions can higher mirror social realities and potentialities.

Nature | 10 min learn

Quote of the day

The speedy manufacturing of COVID-19-related analysis has not been met with an equally nimble course of for correcting probably dangerous errors, argue researchers and science-integrity sleuths Gideon Meyerowitz-Katz and James Heathers. (STAT | 11 min learn)

In a latest quote of the day, we contemplated whether or not finding out an organism places you off consuming it. Reader Ben Lee received in contact to say that it’s fairly the opposite, at the least for wildlife biologists. “I had an older professor inform me ‘When you’re going to work on it, you must eat it at the least as soon as,’” he says. “Generally you’d simply go seize somewhat snack from the tank stuffed with oysters from previous experiments.”

It’s true: once I was a physicist, I used to eat atoms on a regular basis. Let me know what you consider biting the hand that feeds you[r research], plus another suggestions on this article, at briefing@nature.com.

Flora Graham, senior editor, Nature Briefing

With contributions by John Pickrell

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