Putting humans on the moon is more political than you might think.
Category: space – Page 337
Using radial velocity measurements, astronomers from Japan and China have detected a new exoplanet orbiting a G-type giant star. The newfound alien world is similar in mass to Jupiter but much hotter than the solar system’s biggest planet. The discovery is reported in a paper published November 12 on the arXiv pre-print server.
The radial velocity (RV) method to detect an exoplanet is based on the detection of variations in the velocity of the central star, due to the changing direction of the gravitational pull from an unseen exoplanet as it orbits the star. Thanks to this technique, more than 600 exoplanets have been detected so far.
Now, a group of astronomers led by Huan-Yu Teng of the Tokyo Institute of Technology in Tokyo, Japan, reports the finding of a new giant planet as a result of RV measurements using the HIgh Dispersion Echelle Spectrograph (HIDES) at Okayama Astrophysical Observatory (OAO) in Japan. The planet orbits a deeply evolved solar-mass G-type giant star known as HD 167,768, located some 353 light years away.
On its journey to a world-record-breaking orbit, NASA’s Orion spacecraft, which had test dummies in place of people, buzzed the lunar surface and whipped around the far side.
It marks a significant accomplishment in the $4.1 billion test journey that started last Wednesday and is the first time a capsule has reached the moon in 50 years.
The crew capsule and its three wired-up dummies maneuvered within 81 miles of the Moon on the far side.
Astronomers remain puzzled by massive cosmic structures, filaments in deep space, that are larger than some galaxies.
A University of Maryland researcher and colleagues found that the fungus Metarhizium robertsii removes mercury from the soil around plant roots, and from fresh and saltwater. The researchers also genetically engineered the fungus to amplify its mercury detoxifying effects.
Mercury pollution of soil and water is a worldwide threat to public health. This new work suggests Metarhizium could provide an inexpensive and efficient way to protect crops grown in polluted areas and remediate mercury-laden waterways.
The study, which was conducted by UMD professor of entomology Raymond St. Leger and researchers in the laboratory of his former post-doctoral fellow, Weiguo Fang (now at Zhejiang University in Hangzhou, China), was published in Proceedings of the National Academy of Sciences (PNAS) on November 14, 2022.
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Today, the number of confirmed exoplanets stands at 5,197 in 3,888 planetary systems, with another 8,992 candidates awaiting confirmation.
The Solaris program will study space-based solar power amid rising energy concerns.
The European Space Agency (ESA) is set to approve a three-year study to determine whether sending huge solar farms into space could effectively meet the world’s energy demands, a report from the BBC reveals.
So, if all goes to plan, the technology could one day harvest massive amounts of energy from space — enough to power millions of homes.
ESA / A. Treuer.
NASA’s unpiloted Orion moonship, sailing smoothly toward a remote lunar orbit after a spectacular low-altitude flyby Monday, is operating in near-flawless fashion, mission managers reported Monday, out-performing expectations on a flight to pave the way toward the first piloted mission in 2024.
An analysis of the huge Space Launch System rocket that boosted the Orion capsule on its way early Wednesday showed it performed almost exactly as expected, taking off atop 8.8 million pounds of thrust and producing a ground-shaking shock wave that literally blew the doors off launch pad elevators.
The core stage’s four upgraded space shuttle main engines and twin solid-fuel boosters propelled the 322-foot-tall rocket out of the atmosphere and into space almost exactly as planned. At main engine cutoff, the SLS was within 3 miles of its target altitude and within 5 mph of the predicted velocity.