Zap it o.o
Astronomers say they’ll have to keep an eye on the near-Earth asteroid Apophis to see how much of a danger the space rock poses to our planet during a close pass in 2068.
Borrowing a page from high-energy physics and astronomy textbooks, a team of physicists and computer scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) has successfully adapted and applied a common error-reduction technique to the field of quantum computing.
In the world of subatomic particles and giant particle detectors, and distant galaxies and giant telescopes, scientists have learned to live, and to work, with uncertainty. They are often trying to tease out ultra-rare particle interactions from a massive tangle of other particle interactions and background “noise” that can complicate their hunt, or trying to filter out the effects of atmospheric distortions and interstellar dust to improve the resolution of astronomical imaging.
Also, inherent problems with detectors, such as with their ability to record all particle interactions or to exactly measure particles’ energies, can result in data getting misread by the electronics they are connected to, so scientists need to design complex filters, in the form of computer algorithms, to reduce the margin of error and return the most accurate results.
Some animals, like mice and birds, are able to bring their body temperature and metabolism way down to conserve energy, going into a sleep-like state called torpor. Now researchers have identified the brain cells that trigger this state, showing they can activate it on demand. The team was even able to do it in rats, which don’t normally do it at all, suggesting that such a “suspended animation” state might eventually be possible in humans.
Torpor seems to have evolved as a survival strategy during times of food scarcity, allowing animals to snooze through cold nights or even entire winters without wasting too much energy keeping their body temperature up. That of course allows them to survive until things warm up again, and food becomes more plentiful.
Scientists have toyed with the idea of inducing this kind of hibernation state in humans to reduce the resources and room required for long treks into space. Now researchers at Harvard and the University of Tsukuba in Japan may have made progress towards doing just that.
Scientists have found a planet where it rains rocks, the winds whip faster than the speed of sound and there is an ocean of magma more than 100km deep.
Researchers have found extreme “lava planets” before. They are worlds so close to their host star that the surface is made of oceans of molten lava.
But the newly-analysed planet known as K2-141b is unusual even among those extreme worlds. Its surface, ocean and atmosphere are all made up of rocks, which fall like rain and melt into its huge seas.
The secrets of the solar system can drive economic return for all.
The launch of NASA’s fifth Mars rover marks a new milestone in the era of space exploration. It puts focus on the need for greater collaboration, equity and inclusion among international partners to ensure the sustainable, peaceful and fair use of resources. Guidelines for interacting and norms of behaviour are as essential to ensure success in space as on Earth.
NASA reestablished communication with the Voyager 2 probe that is more than 11.6 billion miles, after the agency went dark in March to complete hardware upgrades on its satellite.
It seems Starlink will give other service providers a run for their money. 🙂
Managing Expectations
SpaceX made its expectations clear from the beginning: The space company called the public test a “Better Than Nothing Beta” and suggested users might see speeds of 50 to 150 Mbps.
Continue reading “Starlink Beta Has Outperformed Most Internet in the US” »
An international team of planetary scientists led by astronomers at AOP have found an asteroid trailing behind Mars with a composition very similar to the moon’s. The asteroid could be an ancient piece of debris, dating back to the gigantic impacts that formed the moon and the other rocky planets in our solar system like Mars and the Earth. The research, which was published in the journal Icarus, also has implications for finding such primordial objects associated with our own planet.
Trojans are a class of asteroid that follows the planets in their orbits as a flock of sheep might follow a shepherd, trapped within gravitational “safe havens” 60 degrees in front of, and behind, the planet (Figure 1). They are of great interest to scientists as they represent leftover material from the formation and early evolution of the solar system. Several thousands of those Trojans exist along the orbit of the giant planet Jupiter. Closer to the Sun, astronomers have so far discovered only a handful of Trojans of Mars, the planet next door to Earth.
A team including scientists from Italy, Bulgaria and the US and led by the Armagh Observatory and Planetarium (AOP) in Northern Ireland has been studying the Trojans of Mars to understand what they tell us about the early history of the inner worlds of our solar system—the so-called terrestrial planets—but also to inform searches for Trojans of the Earth. Ironically, it is much easier to find Trojans of Mars than for our own planet because these Earth Trojans, if they exist, sit always close to the Sun in the sky where it is difficult to point a telescope. An Earth Trojan, named 2010 TK7, was found a decade ago by NASA’s WISE space telescope, but computer modeling showed it is a temporary visitor from the belt of asteroids between Mars and Jupiter rather than a relic planetesimal from the Earth’s formation.
The asteroid is believed to be the exposed, dead core from an early planet, that either failed to form, or was the result of many collisions over time.
16 Psyche, which was discovered in 1852, is located in the Solar System’s main asteroid belt between Jupiter and Mars about 370 million kilometres from Earth.
