Mar 7, 2018

Jupiter is nothing like scientists expected

Heat radiating from cyclones on Jupiter's South Pole. Credit: NASA / SWRI / JPL / ASI / INAF / IAPS

New data from NASA's Juno spacecraft show patterns of cyclones, a core that behaves like a solid, and a jet stream that, unlike on Earth, extends deep into the planet.

Why it matters: Despite all of the beautiful images of Jupiter's Great Red Spot nestled among its iconic bands, little is known about what is happening in the planet's interior. The structure could hint at the formation of the solar system's largest and first planet — and of Earth's later origins.

"In almost every field, our ideas of what Jupiter was like are largely incorrect."
— Scott Bolton, Principal Investigator of NASA's Juno mission

Key findings from the four studies published in Nature today:

What's next: Two-thirds of Juno's mission remains. One outstanding question is how much oxygen there is in Jupiter in the form of water. "Understanding the distribution of oxygen in the early solar system, will help us understand the origin of oceans and therefore life itself," says Bolton.

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Updated 31 mins ago - Politics & Policy

U.S. cities crack down on protesters

The scene near the 5th police precinct during a demonstration calling for justice for George Floyd in Minneapolis on Saturday. Photo: Kerem Yucel/AFP via Getty Images

Major U.S. cities have implemented curfews and called on National Guard to mobilize as thousands of demonstrators gather across the nation to continue protesting the death of George Floyd.

The state of play: Hundreds have already been arrested as tensions continue to rise between protesters and local governments. Protesters are setting police cars on fire as freeways remain blocked and windows are shattered, per the Washington Post. Law enforcement officials are using tear gas and rubber bullets to try to disperse crowds and send protesters home.

Updated 36 mins ago - Politics & Policy

George Floyd protests: What you need to know

Photo: David Dee Delgado/Getty Images

Clashes erupted between police and protesters in several major U.S. cities over Saturday night as demonstrations over the death of George Floyd and other police-related killings of black men spread across the country.

The big picture: Floyd's death in Minneapolis police custody is the latest reminder of the disparities between black and white communities in the U.S. and comes as African Americans grapple with higher death rates from the coronavirus and higher unemployment from trying to stem its spread.

Updated 2 hours ago - Politics & Policy

In photos: Protesters and police clash nationwide over George Floyd

A firework explodes behind a line of police officers next to the Colorado State Capitol during a protest over the death of George Floyd in Denver on May 30. Photo : Michael Ciaglo/Getty Images

Police used tear gas, rubber bullets and pepper spray as the protests sparked by the killing of George Floyd continued nationwide into early Sunday.

The big picture: Police responded over the weekend with force, in cities ranging from Salt Lake City to Atlanta to Des Moines, Houston to Detroit, Milwaukee to Washington, D.C., Denver and Louisville. Large crowds gathered in Minneapolis on Saturday for the fifth day in a row.