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The Sun Just Spat Out an X-Class Flare, The Most Powerful Since 2017
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The Sun Just Spat Out an X-Class Flare, The Most Powerful Since 2017
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ScienceAlert
The Sun Just Spat Out an X-Class Flare, The Most Powerful Since 2017
The Sun appears to be waking up from the quiet period of its 11-year cycle.
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Engineers Built a Cockroach-Inspired Robot That Can't Be Squashed
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Engineers Built a Cockroach-Inspired Robot That Can't Be Squashed
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ScienceAlert
Engineers Built a Cockroach-Inspired Robot That Can't Be Squashed
Some of the best robots are inspired by nature. Now, engineers have developed a small, scurrying bot based on the humble cockroach – with almost as much speed and squashability as its biological equivalent.
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Methane Detected on Enceladus Could Actually Be a Sign of Life, Study Shows
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Methane Detected on Enceladus Could Actually Be a Sign of Life, Study Shows
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ScienceAlert
Methane Detected on Enceladus Could Actually Be a Sign of Life, Study Shows
When the Cassini-Huygens probe dove through the salty plumes belching from the interior of Saturn's moon Enceladus, it made an unexpected detection: a collection of compounds that are also associated with hydrothermal vents on Earth's ocean floor.
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The system was trained entirely in simulation, in a virtual version of the real world where the robot’s small brain (everything runs locally on the on-board limited compute unit) learned to maximize forward motion with minimum energy and avoid falling by immediately observing and responding to data coming in from its (virtual) joints, accelerometers, and other physical sensors.
The robot was able to walk on sand, mud, hiking trails, tall grass and a dirt pile without a single failure in all our trials. The robot successfully walked down stairs along a hiking trail in 70% of the trials. It successfully navigated a cement pile and a pile of pebbles in 80% of the trials despite never seeing the unstable or sinking ground, obstructive vegetation or stairs during training. It also maintained its height with a high success rate when moving with a 12kg payload that amounted to 100% of its body weight.
https://youtu.be/nBy1piJrq1A
The robot was able to walk on sand, mud, hiking trails, tall grass and a dirt pile without a single failure in all our trials. The robot successfully walked down stairs along a hiking trail in 70% of the trials. It successfully navigated a cement pile and a pile of pebbles in 80% of the trials despite never seeing the unstable or sinking ground, obstructive vegetation or stairs during training. It also maintained its height with a high success rate when moving with a 12kg payload that amounted to 100% of its body weight.
https://youtu.be/nBy1piJrq1A
YouTube
RMA: Rapid Motor Adaptation for Legged Robots (Results)
Project Page: https://ashish-kmr.github.io/rma-legged-robots/
Paper: https://arxiv.org/abs/2107.04034
Published at Robotics: Science and Systems 2021 (RSS 2021)
Followup works to build on RMA:
https://energy-locomotion.github.io/ (video: https://youtu.be/OQN5W2IAb9k)…
Paper: https://arxiv.org/abs/2107.04034
Published at Robotics: Science and Systems 2021 (RSS 2021)
Followup works to build on RMA:
https://energy-locomotion.github.io/ (video: https://youtu.be/OQN5W2IAb9k)…
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Scientists Discover The First Known Algae Species With Three Distinct Sexes
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Scientists Discover The First Known Algae Species With Three Distinct Sexes
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ScienceAlert
Scientists Discover The First Known Algae Species With Three Distinct Sexes
Although we might think of ourselves as far removed from blobby green algae, we're not really that different.
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Stunningly Ethereal Glass Octopus Is a Ghostly Vision in The Deep Pacific
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Stunningly Ethereal Glass Octopus Is a Ghostly Vision in The Deep Pacific
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ScienceAlert
Stunningly Ethereal Glass Octopus Is a Ghostly Vision in The Deep Pacific
This rarely seen glass octopus bared all recently – even a view of its innards – when an underwater robot filmed it gracefully soaring through the deep waters of the Central Pacific Ocean.
Mitochondria Social Network
Mitochondria appear to communicate and cooperate with one another, both within and between cells. Biologists are only just beginning to understand how and why.
In this false-colored cross-section through an ovarian cell, the mitochondria appear as yellow-edged organelles. Evidence suggests that mitochondria send signals to one another and operate in coordinated networks.
Read more here
Mitochondria appear to communicate and cooperate with one another, both within and between cells. Biologists are only just beginning to understand how and why.
In this false-colored cross-section through an ovarian cell, the mitochondria appear as yellow-edged organelles. Evidence suggests that mitochondria send signals to one another and operate in coordinated networks.
Read more here
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Right now we are at Baikonur, watching the Proton-M rocket getting ready for the launch.
In a few days it'll bring a new module for ISS — Nauka — to the orbit.
In a few days it'll bring a new module for ISS — Nauka — to the orbit.
Nauka ("Science" in Russian), also known as Multipurpose Laboratory Module, is a new module for the Russian segment of the ISS.
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The Curiosity Rover May Have Discovered What Wiped Away Ancient Signs of Life on Mars
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The Curiosity Rover May Have Discovered What Wiped Away Ancient Signs of Life on Mars
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ScienceAlert
The Curiosity Rover May Have Discovered What Wiped Away Ancient Signs of Life on Mars
Evidence of ancient life may have been scrubbed from parts of Mars, a new NASA study has found.
Today we've visited Baikonur Cosmodrom Site 31. The launch site for Soyuz rockets.
It was build in 1961, a bit renovated throughout the years and it still works!
The stars on the last photo depict the number of launches. 400+7.
It was build in 1961, a bit renovated throughout the years and it still works!
The stars on the last photo depict the number of launches. 400+7.
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The animation shows a ball dropping from 1 kilometer (0.6 miles) to the surface of each object, assuming no air resistance. You can compare, for example, that it takes 2.7 seconds for a ball to drop that distance on the Sun, while it takes 14.3 seconds Earth.
https://youtu.be/oIMMZl4n-uk
https://youtu.be/oIMMZl4n-uk
YouTube
A 1 Kilometer "Ball Drop" On Solar System Bodies
This animation shows a ball dropping from 1000 meters to the surface of each object, assuming no air resistance. This should give an idea for the pull you would feel on each object.
It might be surprising to see large planets have a pull comparable to smaller…
It might be surprising to see large planets have a pull comparable to smaller…
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