Scientists returned to central Alaska's boreal forests to measure plant activity during the peak of summer.
Scientists returned to central Alaska's boreal forests to measure plant activity during the peak of summer.

The rate at which the universe is expanding, known as the Hubble constant, is one of the fundamental parameters for understanding the evolution and ultimate fate of the cosmos. However, a persistent difference called the "Hubble Tension" is seen between the value of the constant measured with a wide range of independent distance indicators and …

By Rick Smith A black hole is a region of spacetime where gravity is so relentless that nothing nearby – not stars, not even light – can resist its pull. Astrophysicist Kavitha Arur can't resist it either. She's been fascinated with black holes since childhood. "I always enjoyed mysteries and solving puzzles, and astronomy is …

On Sept. 10, NASA's OSIRIS-REx spacecraft briefly fired its ACS (attitude control system) thrusters to point itself toward Earth, putting it on course to release its sample capsule, carrying rocks and dust from asteroid Bennu, from 63,000 miles (or 102,000 kilometers) above Earth's surface on Sunday, Sept. 24. Yesterday's trajectory-correction maneuver changed the spacecraft's velocity …

The seven Expedition 69 crew members enjoyed an off-duty day on Monday aboard the International Space Station. They will be welcoming three new crewmates at the end of the week when they launch and dock to the orbital outpost. Three future station crew members are at the Baikonur Cosmodrome in Kazakhstan counting down to their …
ISS Reboost: This afternoon, the ISS performed a reboost using the Aft Progress 85P rendezvous and docking (R&D) thrusters. This reboost will set up proper phasing conditions for the Soyuz 70S 2-orbit rendezvous in August. The burn was nominal with a 2.05 Payloads: Immunity Assay: Samples were retrieved and reaction tubes were prepared for centrifuge operations …

Human research and spacesuit work topped the schedule for the Expedition 69 crew aboard the International Space Station at the end of the week. The orbital residents also analyzed microbes, maintained life support systems, and worked on cargo transfers. Researchers on the ground continuously investigate how living in space affects astronauts to keep crews healthy. …

Early morning on Sunday, Sept. 24, the OSIRIS-REx spacecraft's sample capsule will come face-to-face with Earth's atmosphere for the first time since the mission's 2016 launch. On board are an estimated 8.8 ounces, or 250 grams, of rocky material collected from the surface of Bennu in 2020 – NASA's first asteroid sample and the largest …

Life science and space physics continued aboard the International Space Station on Thursday helping researchers improve human health and advance fundamental knowledge. The Expedition 69 crew members also worked on spacesuit maintenance and ongoing cargo activities. Flight Engineers Andreas Mogensen and Satoshi Furukawa concentrated their research activities on space biology to learn how weightlessness affects …