NASA's car-sized Perseverance rover parachuted down to a region of Mars called the Jezero Crater,porn videos of girls having sex a place planetary scientists suspect once teemed with water. Now, two years later, the space agency's scientists may have spotted evidence of a once "rollicking river."
The telltale formation, shown in the image below, shows curving rocks — which indicates past vigorous water flow — made of larger, coarse sediments.
"Those indicate a high-energy river that’s truckin’ and carrying a lot of debris. The more powerful the flow of water, the more easily it’s able to move larger pieces of material," Libby Ives, a researcher at NASA’s Jet Propulsion Laboratory, said in a statement. "It’s been a delight to look at rocks on another planet and see processes that are so familiar," Ives added.
Scientists previously saw these curved shapes from space. The six-wheeled Perseverance rover — a laser-zapping laboratory on wheels — allowed them to look much closer.
This Tweet is currently unavailable. It might be loading or has been removed.
The mosaic picture shows a Martian area composed of 203 images joined together. The curves might be from a shifting river bank, or perhaps sandbars whittled down by billions of years of wind-driven sand-blasting. A question that looms large is what this powerful waterway was like back when Mars was a warmer, bluer planet.
"Scientists are now debating what kind of powerfully flowing water formed those curves: a river like the Mississippi, which winds snakelike across the landscape, or a braided river like Nebraska’s Platte, which forms small islands of sediment called sandbars," NASA wrote.
Generally, there's clear evidence, etched into the Mars desert, of a past, water-rich world. This includes dried-up lakes, dried streams, and even ancient waves.
Want more scienceand tech news delivered straight to your inbox? Sign up for Mashable's Top Stories newslettertoday.
Yet there remains zero evidence of Martian life. Indeed, NASA's rovers have detected organic materials on Mars, which essentially means molecules like carbon that can compose life as we know it, but there's nothing suggesting primitive microbes ever lived on the surface (though the subsurface remains unexplored).
A primary mission of the Perseverance rover is to seek out hints of life, if it ever existed, however difficult the task might be. A good place to look is in an area that once harbored water — and perhaps a deep, vigorous river.
Man on 'Jeopardy!' learns the hard way to always keep it 'gangsta'Former Hillary Clinton campaign CTO joins fitness startup StravaOregon changes law to allow people to pump their own gasListen: Kendrick Lamar just dropped a new song for 'Black Panther'Buffalo Bills fans donate $60,000 to an opposing team's charity'Black Mirror' gets it dangerously wrong about abortionApple says it broke another big App Store record on New Year's DayEric Trump, the smarter one, tweets that Ellen DeGeneres is part of the #DeepStateThe iPhone X may not be selling as well as Apple hopedOregon changes law to allow people to pump their own gasA winter storm is breaking snowfall records in the SoutheastAmber Tamblyn shares 'Sisterhood of the Traveling Pants' reunion photoConvicted drug smuggler Schapelle Corby drops terrible dance trackThe 'bomb cyclone' has people looking for love online'Bomb cyclone' to wallop East Coast, polar vortex rushes in behind it'Bomb cyclone' leads to record coastal flooding in MassachusettsMicrosoft and Johnson Controls announce Cortana thermostat for CESApple will replace iPhone batteries even if they're still 'good''Black Mirror' gets it dangerously wrong about abortionAnthony Rapp reveals what inspired him to go public about Kevin Spacey If you turn Baby Yoda into a snowman, you get an adorable Baby Snowda Vin Diesel laser cut out of ham and cheese is a sandwich masterpiece Pepe the Frog gets dissected in internet culture doc 'Feels Good Man' Avast won't sell data to Jumpshot anymore Sale of .org domain registry delayed by California attorney general The 1 thing Democrats and Republicans agree on: Social media sucks for news More than 100 authors ask Oprah to remove 'American Dirt' from her book club The White House says it's totally saving Trump's deleted tweets, don't you worry How parents can support young activists Twitter's iOS app now visibly threads together replies Samsung's crazy light Galaxy S book is finally available for pre This cartoon perfectly sums up the agonizing debate of grammar nerds Going viral: What 7 Sundance 2020 films tell us about modern life iPhone inspired by Tesla's Cybertruck now available for preorder Nathan Fillion trolls Hodor and, well, all of us, in new Instagram post Finally, scooters that shame you for riding on the sidewalk Apple rumored to release a stack of new gadgets in 2020. Here's what we know. Bed Bath & Beyond is the latest chain to dump Trump LeBron James, L.A. Lakers pay tribute to Kobe and Gianna Bryant Netflix confirms 'The Crown' will end with Season 5 starring Imelda Staunton
2.6793s , 10521.53125 kb
Copyright © 2025 Powered by 【porn videos of girls having sex】,Creation Information Network