, Author at Virtual Orbit - Page 79 of 199

ULA begins de-stacking Vulcan rocket, pivots to Atlas 5 launch of Amazon’s Kuiper satellites for first 2025 mission – Spaceflight Now

By No Comments

SpaceX

ULA begins de-stacking Vulcan rocket, pivots to Atlas 5 launch of Amazon’s Kuiper satellites for first 2025 mission – Spaceflight Now

United Launch Alliance (ULA) hoists its Centaur V upper stage atop the Vulcan first stage booster into the Government Vertical Integration Facility (VIF-G) at Space Launch Complex-41 at Cape Canaveral Space Force Station, Florida on Nov. 1, 2024. Image: United Launch Alliance United Launch Alliance is shifting its launch plans to begin 2025. On Friday, the company began de-stacking its Vulcan booster at its Government Vertical Integration Facility (VIF-G) in order to make room for an Atlas 5 rocket. Gary Wentz, vice president of Government and Commercial Programs at ULA, confirmed in an interview with Spaceflight Now that they de-stacked the Centaur upper stage and the interstage adapter last week. “The big thing with the [USSF-106] destack is it’s really demonstrating the flexibility that...

Space Forces Korea holds first POLARIS HAMMER

By No Comments

Space Force

Space Forces Korea holds first POLARIS HAMMER

OSAN AIR BASE, South Korea (AFNS) -- U.S. Space Forces Korea held the first phase of POLARIS HAMMER – KOREA, a space warfighter inclusive command-and-control exercise, in coordination with the U.S. Space Force 392nd Combat Training Squadron located in Colorado Springs, at Osan Air Base, South Korea, Jan. 21-24.The exercise validates SPACEFOR-KOR’s ability to plan, coordinate, synchronize and execute space effects in support of Korean theater campaign objectives and will be held in three stages to enable a deliberate focus on the planning, execution and assessment of the space component at the operational level. “Last week’s event was the firs...

The perfect boiled egg takes more than half an hour to cook

By No Comments

Science

The perfect boiled egg takes more than half an hour to cook

How do you cook your eggs?The Daniel Heighton Food Collection/Alamy Cooking a perfect boiled egg takes at least half an hour, physicists have claimed, as they say the best method for a tasty and nutritious breakfast involves switching repeatedly between pans of different temperatures. As anyone who has ever struggled to get an egg to their liking will know, an even boil is difficult because the yolk and white cook at different temperatures. Cooking at a vigorous boil works for the white, which requires temperatures of 85°C (185°F) for optimum consistency, but can also result in a hard yolk, which only needs 65°C (149°F). Chefs have found immersing the egg in a water bath at a steady temperature of between 60°C and 70°C (140°F and 158°F) can lead to better cooked yolks,...

Space Systems Command, Japan launch first bilateral space effort > United States Space Force > Article Display

By No Comments

Space Force

Space Systems Command, Japan launch first bilateral space effort > United States Space Force > Article Display

Tanegashima Space Center, Kagoshima, Japan (AFNS) -- A U.S. space domain awareness payload hosted on Japan's Quasi-Zenith Satellite 6 successfully launched on a Japanese H-3 launch vehicle from the Yoshinobu Launch Complex at the Japan Aerospace Exploration Agency’s Tanegashima Space Center in Japan on February 2. This is the first bilateral U.S. Japan cooperative space effort focused on national security, and the first of two launches as part of the JAXA Quasi-Zenith Satellite System Hosted Payload program. The satellite will be operated by Space Operations Command’s Mission Delta 2, which conducts Space Doma...

This Hot Jupiter Probably Formed Close to Its Star

By No Comments

Astronomy

This Hot Jupiter Probably Formed Close to Its Star

The current exoplanet census contains 5,832 confirmed candidates, with more than 7,500 still awaiting confirmation. Of those that have been confirmed, most have been gas giants ranging from Neptune-like bodies (1992) to those similar to or many times the size and mass of Jupiter and Saturn (1883). Like the gas giants of the Solar System, astronomers generally theorized that these types of planets form in the outer reaches of their star system, where conditions are cold enough for gases like hydrogen and helium and volatile compounds (water, ammonia, methane, etc.) will condense or freeze solid. However, astronomers have noted that many of the gas giants they’ve observed orbited close to their stars, known as “Hot Jupiters.” This has raised questions about whether or not gas giants a...