Animals Wild Cities This wild African cat has adapted to life in a big city. Animals This frog mysteriously re-evolved a full set of teeth. Animals Wild Cities Wild parakeets have taken a liking to London.
Animals Wild Cities Morocco has 3 million stray dogs. Meet the people trying to help. Animals Whales eat three times more than previously thought. Environment Planet Possible India bets its energy future on solar—in ways both small and big. Environment As the EU targets emissions cuts, this country has a coal problem. Paid Content How Hong Kong protects its sea sanctuaries. History Magazine These 3,year-old giants watched over the cemeteries of Sardinia. Magazine How one image captures 21 hours of a volcanic eruption.
Science Why it's so hard to treat pain in infants. Science The controversial sale of 'Big John,' the world's largest Triceratops. Science Coronavirus Coverage How antivirals may change the course of the pandemic. As any good sailor knows, the winds encountered play a significant role in how a ship handles at sea. Voyager magnetometer specialist Leonard Burlaga of the NASA Goddard Space Flight Center interprets the short distance as an indication that the interstellar magnetic field is pushing harder against the southern hemisphere of the solar system.
At the same time, the sun is also trimming the sails a bit through variations in the solar cycle. Voyager 2, which unlike its twin still has a functioning plasma detector, also reported another surprise.
The reduced velocity of solar wind at the termination shock should have been converted to heat. The answers may come in time as the Voyagers continue their race through the heliosheath.
In the meantime, astronomers are reconfiguring their model of the solar system. The atoms start out with a positive charge but become neutral after stealing an electron from another particle. This neutrality enables the particles to travel straight, like Jet Skis across the solar magnetic field. Register or Log In. The Magazine Shop. Login Register Stay Curious Subscribe. The Sciences. Pioneer 10 flies past Jupiter as the first mission to the giant planet.
Newsletter Sign up for our email newsletter for the latest science news. Sign Up. Already a subscriber? Want more? More From Discover. Recommendations From Our Store. Stay Curious.
And yet, it takes nearly 17 hours for messages from Voyager 2 to travel back to Earth and more than 20 hours for those sent by Voyager 1. A whole meme cycle can roil the internet here on Earth between a message's dispatch and its arrival.
The probes' distance only makes them more compelling emissaries. A year ago, the mission checked off yet another achievement when Voyager 2 followed its twin through the bubble that surrounds our solar system. In just a couple of hours, Voyager 2 went from being surrounded by material born in the sun to being bathed by the local neighborhood — a transition Voyager 1 had made in Stone and Krimigis spoke to mark the publication of the first batch of scientific papers comparing the two crossings.
The twin spacecraft's transitions to interstellar space have been similar but not identical, variations on a theme that humans have no concrete plans to experience again anytime soon. Unless something very dramatic happens in the universe around us, Pluto veteran New Horizons, like the Pioneer spacecraft before it, will fall silent long before it escapes our little bubble.
0コメント