Tae Seok Moon, associate professor of energy, environmental and chemical engineering at the McKelvey School of Engineering at Washington University in St. Louis, has taken a big step forward in his quest to design a modular, genetically engineered kill switch that integrates into any genetically engineered microbe, causing it to self-destruct under certain defined conditions.
His research was published Feb. 3 in the journal Nature Communications.
JW first light and selfie.
The team behind NASA’s James Webb Space Telescope released some of the first images from the much-anticipated observatory on Friday (Feb. 11), and while the photos aren’t exactly stunning, they mark a huge scientific milestone.
Circa 2017
(Inside Science) — On the fictional Star Wars planet Tatooine, moisture farmers erect tall white structures called vaporators to pull valuable water from the desert air. Now researchers on planet Earth have built a device to perform the same basic task. They estimate a suitcase-sized version could harvest enough drinking water per day for a family of four. The device is described in a paper published in the journal Science.
The team, made up of scientists from the University of California, Berkeley and the Massachusetts Institute of Technology in Cambridge, expects the device to be most useful in arid regions and in areas where the traditional water supply is polluted. The system relies on the unique properties of a relatively new type of material called a metal organic framework, or MOF.
MOFs were originally created in the mid-1990s by stitching together metal clusters and organic, or carbon-containing, molecules to form a fine porous structure. The tiny pores help the materials absorb large amounts of liquids or gases.
Cameras aboard NASA’s Parker Solar Probe managed to peer through Venus’ thick clouds to photograph the planet’s surface.
If confirmed, this “unexpected” discovery in the Milky Way would be the first time a life-supporting planet has been found orbiting a dying sun.
Titanium is the lifeblood of metal 3D printing. As the technology was initially driven by the aerospace and weapons sectors, it has become the metal of choice for its high strength-to-weight ratio. Now, Desktop Metal (NYSE: DM) has qualified titanium alloy Ti-6Al-4V (Ti64) for its Studio Systems 2, making it one of the first office-friendly machines capable of 3D printing with titanium. One of Desktop Metal’s first customers in the space appears to be Apple co-founder Steve Wozniak, whose new startup, Privateer Space, aims to clean up space junk.
Oort Cloud comet C/2014 UN271, also known as Comet measures some 85 miles (137 km) in diameter, give or take 10.5 miles (17 km), reports a research team led by astronomer Emmanuel Lellouch of the Paris Observatory. Their new paper on the mega comet has been accepted for publication in Astronomy and Astrophysics Letters, and you can sneak a peak of the preprint at the arXiv.
These latest observations confirm that Comet is the largest Oort Cloud object ever detected, as it’s nearly twice as big as comet Hale-Bopp (observed in 1997), the nucleus of which measured between 25 and 50 miles (40 and 80 km) wide. It’s also bigger than Comet Sarabat (observed in 1729), which had a nucleus measuring somewhere around 62 miles (100 km) in diameter.
Comet is currently inbound from the Oort Cloud 0, a distant region of the solar system known for packing billions and possibly trillions of icy objects. The comet will make its closest approach to Earth in 2031, when it will come to within 11 au of the Sun (1 billion miles), in which 1 au is the average distance from Earth to the Sun. The comet, coming no closer than Saturn, won’t likely be visible to the unaided eye, but astronomers will be keeping a close watch, as it’s turning out to be a rather extraordinary object.
Saturn’s aurora borealis, unlike auroras on other planets, is driven by a powerful weather system. The winds drag Saturn’s magnetic field lines.
A team of astronomers using the European Southern Observatory’s Very Large Telescope (ESO’s VLT) in Chile have found evidence of another planet orbiting Proxima Centauri, the closest star to our Solar System. This candidate planet is the third detected in the system and the lightest yet discovered orbiting this star. At just a quarter of Earth’s mass, the planet is also one of the lightest exoplanets ever found.
“The discovery shows that our closest stellar neighbour seems to be packed with interesting new worlds, within reach of further study and future exploration,” said João Faria, a researcher at the Institute of Astrophysics and Space Sciences, Portugal, lead author of a study published today in Astronomy and Astrophysics. Proxima Centauri is a small, M-class star, lying just 4.2 light years away.
The newly discovered planet, named Proxima d, orbits Proxima Centauri at a distance of about four million kilometres, less than a tenth of Mercury’s distance from the Sun. It lies between the star and the habitable zone – the band where liquid water can exist at the surface of a planet – and takes just five days to complete one orbit around its star.
