NASA’s Curiosity rover has found some of the best evidence yet that ancient life may have existed on Mars — and an answer for what could have wiped it out. When drilling into rocks on Mount Sharp, the central peak of the Red Planet’s Gale Crater, the rover found evidence of siderite, an iron carbonate … Read more
Dyson spheres, the hypothetical mega-structures that advanced alien civilizations might use to enclose a star and harness its energy, suffer from a fatal flaw: They are catastrophically unstable. But now an engineer claims to have figured out a way to stabilize these structures — and all it takes is two stars. In the 1960s, physicist … Read more
Left unchecked, the space around our planet could get so cluttered with debris that we might not be able to use some orbits anymore, according to the latest European Space Agency (ESA) report on the space environment. The report, published April 1, states that although new standards to curb space debris are becoming more widely … Read more
A California-based startup plans to launch hundreds of flattened “microsatellites” into low-Earth orbit at once, by firing rockets out of a giant centrifugal cannon. The first batch of pancake-like spacecraft could be shot into space as soon as next year — and could set a new record. SpinLaunch is a private company that aims to … Read more
Mercury’s mysterious makeup may be the result of a grazing “hit and run” collision between two similar-sized protoplanets in the early solar system, a new study suggests. Mercury, the smallest and innermost planet in our solar system, has a number of unusual characteristics that have long puzzled scientists. Despite being only slightly larger than Earth’s … Read more
“Space tornadoes” are swirling near the supermassive black hole at the heart of our Milky Way galaxy, new telescope observations have revealed in unprecedented detail. Astronomers recently zoomed in on the cosmic twisters using the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile. Although these rotating structures had been seen previously, the new observations with ALMA … Read more
The Extremely Large Telescope (ELT), currently under construction in northern Chile, will give us a better view of the Milky Way than any ground-based telescope before it. It’s difficult to overstate how transformative it will be. The ELT’s primary mirror array will have an effective diameter of 39 meters. It will gather more light than … Read more
NASA scientists have confirmed that a mysterious object shooting toward us through the solar system is an “interstellar object” — only the third of its kind ever seen. Experts have also given the cosmic interloper an official name, and revealed new information about its origins and trajectory. News of the extrasolar entity, initially dubbed A11pl3Z, … Read more
A U.K. start-up has shocked the space exploration community after unveiling plans to use a novel nuclear fusion propulsion system to power an orbital fleet of reusable “alien-like” rockets, known as Sunbirds, which the company says could revolutionize how we explore the solar system — and beyond. The technology behind this ambitious project will begin … Read more
A quartet of Earth-like worlds, each about 20% to 30% the size of our planet, circle one of our closest stellar neighbors, a new study reveals. The rocky alien worlds are close enough that future generations of humans may be able to visit them with futuristic rocket propulsion technology. However, it is unlikely that we … Read more
