Twist-PM for efficient SHG in the twisted rBN films with random thicknesses. (a) Schematics of a nonlinear optical crystal assembled by four pieces of the rBN films with different thicknesses of t1, t2, t3, t4, and a sequence of twist angles. (b) Twist-PM for efficient SHG. For the four rBN films with different thicknesses (800, 600, 400, … Read more
Credit: Pixabay/CC0 Public Domain NASA has onboarded another integral partner to its lunar plans by striking a deal with the United Arab Emirates to build part of its lunar Gateway space station and send one of the Arab country’s astronauts on a future Artemis mission. The deal with the Mohammed bin Rashid Space Center means … Read more
The brand new rocket, United Launch Alliance’s (ULA) Vulcan Centaur, lifts off from Space Launch Complex 41d at Cape Canaveral Space Force Station in Cape Canaveral, Florida, on January 8, 2024, for its maiden voyage, carrying Astrobotic’s Peregrine Lunar Lander. Chandan Khanna | AFP | Getty Images A new U.S. rocket reached orbit early Monday, … Read more
The first U.S. lunar lander in more than 50 years rocketed toward the moon Monday, launching private companies on a space race to make deliveries for NASA and other customers. Astrobotic Technology’s lander caught a ride on a brand new rocket, United Launch Alliance’s Vulcan. The Vulcan streaked through the Florida predawn sky, putting the … Read more
A person cleans his car from snow in Wajima in the Noto peninsula facing the Sea of Japan, northwest of Tokyo, Sunday, Jan. 7, 2024. Monday’s temblor decimated houses, twisted and scarred roads and scattered boats like toys in the waters, and prompted tsunami warnings. Credit: AP Photo/Hiro Komae Rescue teams worked through snow to … Read more
In this image made from NASA video, United Launch Alliance’s Vulcan rocket with Astrobotic Technology’s lander onboard is launched from Cape Canaveral Space Force Station in Florida, Monday, Jan 8, 2024. The first U.S. lunar lander in more than 50 years rocketed toward the moon Monday, launching private companies on a space race to make … Read more
LONDON — Roy Calne, a pioneer of organ transplantation who led Europe’s first liver transplant operation in 1968, has died aged 93. Calne’s family said he died late Saturday in Cambridge, England, where he was professor emeritus of surgery at Cambridge University. Born in 1930, Calne trained as a doctor at Guy’s Hospital in London … Read more
Police officers remove the debris from a fire at a market in Wajima, Ishikawa prefecture, Japan Saturday, Jan. 6, 2024. A series of powerful quakes set off a large fire in the town of Wajima, as well as tsunamis and landslides in the region. Credit: Kyodo News via AP Aftershocks threatened to bury more homes … Read more
In this image provided by Coleman Fredricks, coal miners unearthed a mammoth tusk in May 2023 at the Freedom Mine near Beulah, N.D. The large scoop of an electric shovel dug the tusk out of the earth and dropped it into a truck, which later dumped the load, revealing the tusk. The North Dakota Geologic … Read more
Credit: Unsplash/CC0 Public Domain Over the last months, the raison d’être of winter sports has been threatened more than ever by a range of challenges and controversies. From the occupation by activists of the glacier of Girose, Southeastern France, to protest against plans for a new cable car, to doubts over whether to hold pre-season … Read more
