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 The enigmatic rock, as NASA described it in a press release, could not be interrogated to the fullest due to the rover   instruments not having enough room to work in. But the features do hint at how they formed on an ancient, wetter Mars.     Perseverance arrived on Mars in February 2021 with a fundamental goal: investigate a dried-up river delta on the edge of a multi-billion-year-old lake for signs of ancient microbial life. Mars is the only world in our solar system where space agencies have active landers driving around the planet   surface, imaging and digging up evidence of its ancient past. Though Mars has much stanley cup spain  more extreme temperature fluctuations than our planet, and is much more arid, scientists believe it had large lakes of liquid water on its surface billions of years ago. One of tho stanley drinking cup se lakes was in Jezero Crater, in which Perseverance landed three years ago. Since then, Perseverance has trekked across Jezero   western edge, imaging the  stanley quencher planet and scooping up rock cores and some Martian atmosphere that will eventually be shipped to Earth, pending a lot of funding鈥攁nd even more determination. The basic idea behind Perseverance   astrobiological search is that, if life existed on Mars, it would ;ve looked like some of the earliest life on Earth: microbes that eked out existence in shallow water. These microbes form sedimentary concretions鈥攍ayers of rock鈥攁s they go about their lives, which then fossilize in warped, Sol Lewit Tsre Everything You Need to Know Before Watching The Dark Crystal: Age of Resistance
 Many of the hoverboards/Swagways currentl stanley kubek y on sale for cheap have something in common: theyre made by knock-off Chinese companies that dont pass any of the safety tests common to electronic devices. And thats a problem, because big lithium-ion batteries  and the chargers for them  can potentially be very dangerous, without the right safety engineering. Its the same issue e-cigarettes went through a few years ago: a new gadget is very popular, but theres no market-leading product, so a wave of  dangerous  Chinese knockoffs flood the market.     This isnt just some bogeyman: last week, a family home in Lafitte burned down, a fire blamed on a defective hoverboard bought off Amazon. In the UK, the Fire Brigade blames three house fires in October on faulty hoverboards. Its not a problem limited to a few devices, either: the UK Trading Standards authority seized 15,000 defective hoverboards at ports today; it said 88% of the boards it examined overall turned out not to comply with basic electronics safety regulations, mostly relating to faulty fuses, plugs, or chargers. If you want to protect yourself from exploding hoverbo stanley cup ards, there are a few options: most imporantly, make sure that the device and charger conform to international standards. The CE marking, required on every device sold in the European Union, is stanley cup website  a good starting point. Buying from a well-known, non-eBay brand would also be a good idea. More prudently, you could just buy your budding futurist child a regular skatebo