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Steam-powered spaceship could cruise the cosmos indefinitely without running out of gas January 22, 2019

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Come one, come all and behold the future of space travel: steam power! No, seriously; half a century after the world’s first manned space mission, it seems that interplanetary travel has finally entered the steam age. Scientists at the University of Central Florida have teamed up with Honeybee Robotics, a private space and mining tech company based in California, to develop a small, steam-powered spacecraft capable of sucking its fuel right out of the asteroids, planets and moons it’s exploring. By continuously turning extraterrestrial water into steam, this microwave-sized lander could, theoretically, power itself on an indefinite number of planet-hopping missions across the galaxy — so long as it always lands somewhere with H20 for the taking.

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Asteroid Rate Jumped in Solar System’s Past | Quanta Magazine January 21, 2019

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Some 290 million years ago, as the last trilobites scuttled across the seafloor, the skies above grew just a little more ominous. At that point, large asteroids — including the impactor that would later kill off the dinosaurs — began to rain down on our planet between two and three times more frequently than they did before, according to a study published today in Science. Researchers spotted the trend while surveying impact craters on both Earth and our closest celestial neighbor, the moon. In these records, many impact craters date back to the past few hundred million years. Older ones are few. “It was surprising,” said Sara Mazrouei of the University of Toronto, the lead author of today’s paper. “We see the footprints of it, but what really happened to cause this?”

Source: Asteroid Rate Jumped in Solar System’s Past | Quanta Magazine

Take This Road Trip To Visit The Best Thrift Stores In Cleveland January 21, 2019

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This Bargain Hunters Road Trip Will Take You To The Best Thrift Stores In Cleveland Sometimes you just find yourself itching to go out and go shopping. There’s a particular pleasure that comes with treating yourself, especially when you know you’re getting a deal. Thrift stores are a perfect way to indulge in the bliss of spontaneous shopping, as they often offer incredible deals and feature unique finds that you won’t obtain anywhere else. Clevelanders have many options when it comes to thrift shopping—so many options, in fact, that you could make these shops into a road trip to take time and time again.

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Laughing Squid January 21, 2019

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While building a comb off the branch of a tree, a colony of honey bees in Vietnam engaged in a defensive wave, a process that sends murmuring ripples down the line in order to keep predators away. While this wave function is purely utilitarian, the resulting audio-visual effect is absolutely fascinating.

This ‘wave’ is utilized against wasps and is referred to as ‘shimmering’ behavior or defense waving. Bees in the outer layer thrust their abdomens 90° in an upward direction and shake them in a synchronous way. …The signal is transmitted to nearby workers that also adopt the posture, thus creating a visible, and audible ‘ripple’ effect across the face of the comb.

 

https://laughingsquid.com/defensive-waves-ripple-through-honey-bee-colony/?fbclid=IwAR1w_g4-4M1lkY8NQBKwJu5KAfe2v0pwjOYVM2fGKDDtQYAXD3ESIXzFGSw

Source: Laughing Squid