Much of the Martian surface appears pock-marked. At the southern polar region, frozen carbon dioxide converted into its gaseous state under the Martian summer sun creates a Swiss cheese landscape. Astronomers have had images showing this pattern for about 10 years.
But in a new, late-summer image of the planet’s southern hemisphere, a deeper-than-normal hole stands out. The feature is hundreds of yards wide and unlike anything in its surroundings.
Alt: Mystery Hole on Mars’ South Pole
Gale Crater, the site being explored by the Curiosity rover, was chosen as a landing site because its structure and composition suggested that it might preserve information about Mars’ past. As Curiosity climbed the slopes of the crater’s central peak, various discoveries have clearly indicated that Mars had a watery past.
A new study led by Northern Illinois University geography professor Wei Luo calculates the amount of water needed to carve the ancient network of valleys on Mars and concludes the Red Planet’s surface was once much more watery than previously thought.
As the Fermi paradox states, the Universe is a vast, unknowable space, filled with trillions upon trillions of potentially habitable planets, so… where are all the aliens?
In the latest attempt to solve this conundrum, a trio of researchers have suggested that advanced alien civilisations have gone into self-imposed ‘hibernation’ – waiting for a future where the Universe is far colder than it is now, which would facilitate the kind of processing power we could only ever dream about.
Alt: Aliens May Be Hibernating Until the Universe Cools Down
Researchers have announced the third detection of gravitational waves—ripples in the fabric of space and time.
Albert Einstein predicted gravitational waves as part of his theory of general relativity more than 100 years ago, but it has taken astrophysicists more than 50 years of trial and error to find the direct evidence to support his theory.
Scientists have long tried to explain the origin of a mysterious, large and anomalously cold region of the sky. In 2015, they came close to figuring it out as a study showed it to be a “supervoid” in which the density of galaxies is much lower than it is in the rest of the universe. However, other studies haven’t managed to replicate the result.
Due to advances in technology, scientists have been keeping an eye out for signs of alien megastructures. One scientist hypothesizes that, if such a megastructure exists, it would be around a pulsar instead of a star.
It is no easy thing to search for signs of intelligent life beyond our Solar System. In addition to the incredible distances involved and the fact that we really only have indirect methods at our disposal, there is also the small problem of not knowing exactly what to look for. If intelligent life does exist beyond our Solar System, would they even communicate as we do, using radio transmitters and similar forms of technology?
Researchers have found a way around one of nanotechnology’s biggest stumbling block in developing workable nanabots. They created artificial nanoparticles that can communicate with each other using chemical signals.
Decision-making is typically thought of as something done by intelligent living things and, in modern times, computers. But over the past several years, researchers have demonstrated that physical objects such as a metal bar , liquids [paper], and lasers can also “make decisions” by responding to feedback from their environments. And they have shown that, in some cases, physical objects can potentially make decisions faster and more accurately than what both humans and computers are capable of.
Consumers should consider going organic because pesticides on foods are far more dangerous than was thought, causing damage to the human brain, a major study suggests.
Retreating glaciers have left villages in Ladakh with acute water shortages. Local engineer Sonam Wangchuk, noticing one day how ice under a bridge stayed frozen even in summer, came up with a solution as ingenious as it is beautiful
An expanse of ice roughly the size of Delaware is close to breaking off from the warming Antarctic ice shelf to form one of the world’s largest-ever icebergs, scientists said Thursday.
Call it the largest fart in Earth’s history. As the most recent ice age came to a close 12,000 years ago, retreating glaciers in the Barents Sea north of Norway triggered unprecedented blowouts of methane gas from massive dome-like features on the seabed.
To find a month when the global average temperature over the land and oceans was below average, you have to go all the way back to December 1984, according to the latest monthly analysis from the National Oceanic and Atmospheric Administration.
By swapping solar photovoltaics for coal, the US could prevent 51,999 premature deaths a year, potentially making as much as $2.5 million for each life saved.
Related: China Will Make as Much Clean Electricity by 2030 as the U.S. Does From All Sources Today