The Odds of Finding Water on Mars

Mars has plenty of water, and almost all of it is in the wrong place. The poles are rich in ice, the equator, where you would actually want to land, has none within reach. That leaves the mid-latitudes, and until now the honest answer about what lies beneath them has been a bit of a shrug. Two new studies from the Planetary Science Institute have changed the shape of that answer. Rather than simply asking whether the data are consistent with buried ice, they have started calculating the odds and can now say, of a given patch of Martian ground, that there is a 64 per cent chance of finding ice if you dig there.

The Telescope That Points Itself

Time on a large professional telescope is one of the scarcest resources in science. Astronomers wait months for a few hours, and every one of those hours is a running argument with the weather, the Moon and the atmosphere. Point at the wrong target at the wrong moment and the data comes back soft, washed out, or useless, with the next chance half a year away. A team has now handed that argument to a machine. Their system was trained not on the rules astronomers use but on what astronomers actually did, night after night, for years.

Interstellar Travel III: Antimatter to the Rescue?

With the end of the Space Age and the winding down of the Cold War, scientists again returned to the question of interstellar flight. Having failed to realize a working concept that could be realized in the near term, more exotic ideas began to be considered, reflecting further breakthroughs in theoretical physics.

Ancient Maltese Seafarers Likely Navigated By The Stars

Ancient Maltese seafarers had both a complex cosmology and likely at least rudimentary skills in celestial navigation. It's thought that they used stars in the southern constellation of Crux to make their way around the south-central Mediterranean.

NASA's MAVEN Illuminates New Understanding of Auroras at Mars

NASA MAVEN (Mars Atmosphere and Volatile Evolution) mission scientists have uncovered a key puzzle piece in understanding certain types of auroras on Mars, finding that they form in a similar way to Earth-based auroras.

SpaceX Junk Hits the Moon. Not a Good Sign

The spent upper stage from a SpaceX Falcon 9 rocket has struck the Moon, illustrating the hazard posed by debris in cislunar space. This problem will increase as launches to orbit and to the Moon become more common in the coming years.

Astronomers Find a New Object from the Early Universe Using Webb Data

Homer Dávila Gutierrez, director of SKYCR.ORG, has identified a gravitational arc candidate in the galaxy cluster MACS J0308.9+2645 from public data from the James Webb Space Telescope. The object had not been previously reported and is located at a photometric redshift close to 4.4. The preprint is available on arXiv and the manuscript is under review in Publications of the Astronomical Society of Japan.