Lifeboat Foundation

In day-to-day life, light seems intangible. We walk through it and create and extinguish it with the flip of a switch. But, like matter, light actually carries a little punch—it has momentum. Light constantly nudges things and can even be used to push spacecraft. Light can also spin objects if it carries orbital angular momentum (OAM)—the property associated with a rotating object’s tendency to keep spinning.

Scientists have known that light can have OAM since the early 90s, and they’ve discovered that the OAM of light is associated with swirls or vortices in the light’s phase—the position of the peaks or troughs of the electromagnetic waves that make up the light. Initially, research on OAM focused on vortices that exist in the cross-section of a light beam—the phase turning like the propeller of a plane flying along the light’s path.

But in recent years, physicists at UMD, led by UMD Physics Professor Howard Milchberg, have discovered that light can carry its OAM in a vortex turned to the side—the phase spins like a wheel on a car, rolling along with the light. The researchers called these light structures spatio-temporal optical vortices (STOVs) and described the momentum they carry as transverse OAM.

The Artemis II mission is scheduled to put people back into lunar orbit in 2025, while the Artemis III will see humans return to the lunar surface no earlier than 2026, per Space. America’s manned mission to the moon is the marquee news, but the real news here is that the logo we most associate with NASA is called the “worm.” Quick! Put on some Beastie Boys, y’all, because NASA is once again doing the worm.

Artemis II Boosters Receive Iconic NASA “Worm”

It wasn’t aliens, but the first interstellar object found in our solar system still has much to teach us about the cosmos.

The Voyager 1 was launched in 1977. Almost 50 years later, it’s still going and sending back information, penetrating ever deeper into space. It can do that because it’s powered by nuclear energy.

Long a controversial energy source, nuclear has been experiencing renewed interest on Earth to power our fight against climate change. But behind the scenes, nuclear has also been facing a renaissance in space.

In July, the US National Aeronautics and Space Administration (NASA) and Defense Advanced Research Projects Agency (DARPA) jointly announced that they plan to launch a nuclear-propelled spacecraft by 2025 or 2026. The European Space Agency (ESA) in turn is funding a range of studies on the use of nuclear engines for space exploration. And last year, NASA awarded a contract to Westinghouse to develop a concept for a nuclear reactor to power a future moon base.

Hong Kong’s public transportation landscape undergoes a revolutionary transformation with the deployment to service of a cutting-edge zero-emission hydrogen bus today. The first-ever hydrogen double deck bus has commenced service on our Route 20, marking a remarkable achievement and the next step in the transition of Hong Kong’s rich transport history as it takes to the road with customers on board, following our previous debut of Hong Kong’s first ever electric double deck bus two years ago. We eagerly anticipate reaching even more significant milestones in the near future, as the hydrogen bus will expand its operations to two additional routes in the next phase, underscoring our leading position in the public transport zero-emission space and making a further transformation for citizens and travellers in the vibrant heart of Kowloon.

Our hydrogen double deck bus, which is operated from and refuelled at Hong Kong’s first hydrogen refuelling station in our West Kowloon Depot, embarks on its first journey at 11:00am today. We were proud to welcome many joyful bus and transport enthusiasts on board the bus and share in the joy by handing out some certificates and gifts to commemorate this historic moment – “The Future is H2re”. Serving Route 20, the hydrogen bus will travel from Kai Tak (Muk On Street) to Cheung Sha Wan (Hoi Tat), offering in the initial phase a daily schedule of 6 to 8 trips.

Roger Ma, General Manager (Operations) of Citybus expressed his pride in the groundbreaking achievement of our “#MissionZero” campaign. “We take great pride as a company in serving the citizens of Hong Kong every day and in debuting Hong Kong’s first ever hydrogen double deck bus, which will shuttle through the bustling heart of Kowloon, encompassing the districts of Sham Shui Po, Yau Tsim Mong, and Kowloon City. In the next phase, our hydrogen bus will expand its service coverage to include Routes 20A and 22M.These three routes, include two prominent trunk routes, serve as core routes for Citybus, enabling us to gather further invaluable operational insights into real-world scenarios, including differing traffic conditions, weather factors and performance.”

Four new astronauts are scheduled to launch to the International Space Station on Saturday (March 2) as part of NASA’s SpaceX Crew-8 mission.

Crew-8, the eighth operational commercial crew mission for NASA, will lift off Saturday at 11:16 p.m. EST (0416 GMT on March 3) from Kennedy Space Center in Florida using the SpaceX Crew Dragon Endeavour spacecraft, situated atop a Falcon 9 rocket. The Crew Dragon spacecraft will then dock with the orbiting lab the following day around 2:10 p.m. EST (1910 GMT).

Musk also hinted that the much-delayed EV will get a SpaceX package with rockets by reposting that bold claim on social media. It costs $50,000 to reserve a Roadster, with full price undisclosed.

NASA is using an AI-powered technique called “generative design” to dramatically speed up the process of designing hardware for upcoming missions — and one of the first AI-designed missions will use a massive balloon to lift a telescope to the stratosphere.

The need: Weight is one of the most important considerations when NASA engineers are designing parts for new spacecraft — the heavier the final object is, the more fuel will be needed to launch it, and the more expensive the mission will be.

Continue reading “NASA’s new balloon-borne telescope was designed with AI” »

One of the most crucial steps—if not the most crucial step—in safely returning astronauts to the Earth from space is the recovery process. This can happen either on land or sea, but for NASA’s upcoming Artemis II mission, the Orion capsule will be conducting a splashdown like the Mercury, Gemini, Apollo, and currently SpaceX Dragon capsules. This is why the Artemis II crew recently participated in Underway Recovert Test 11 (URT-11) on Febraury 24, which was the 11th scheduled mockup recovery test using a mockup capsule designed to simulate the exact conditions they will endure after splashing down from their historic mission.

NASA Artemis II crew members and U.S. Navy personnel seen participating in Underway Recovery Test 11 (URT-11) in the Pacific Ocean on Feb. 25, 2024. (Credit: NASA/Kenny Allen)

“Our highly choreographed recovery operations will help ensure the final phase of NASA’s first crewed mission to the Moon in more than 50 years ends as a success,” Lili Villareal, who is NASA’s landing and recovery director, said in a statement.