No earlier than May 25 for Starliner, they are still working on the helium leak.
The ISS schedule is free until early June at least or maybe even early July, if it gets delayed beyond that then ISS scheduling could shift the launch further.
A Falcon 9 booster has flown for the 21st time, going...
Essentially all satellites have power, almost always via photovoltaics. Batteries are used to make it through the shadow of Earth. Almost all satellites have propulsion to maintain their orbit and attitude.
The two things you want to add are already essential components of almost all spacecraft.
The magnetic field bends particles in phi but not in eta. You might see bremsstrahlung from (relatively low energy) electrons. You can make this plot separately for electrons, positrons and photons to check.
You don't need to guess the units of the answer, you need to work with units.
##F = CI \rho \frac{v^2}{2} A = 0.5 \frac{1.225 kg}{m^3} \frac{(20 m/s)^2}{2} 0.1 m^2 = 12.25 kg \frac{m}{s^2} = 12.25 N##
This formula is assuming all of the wing has the same velocity relative to the air. Your...
China has launched Chang'e 6, planned to return samples from the far side of the Moon for the first time. The mission profile is similar to Chang'e 5, but landing on the far side means you need a relay satellite for communication. Samples are expected to land on Earth in late June.
Chang'e 7 is...
NASA’s Readiness for the Artemis II Crewed Mission to Lunar Orbit - report by the Office of Inspector General
We knew there were concerns about the heat shield after Artemis I, but as far as I know we never got to see pictures before. I can see why NASA is concerned:
The reactions are shown in "Latest activity" in your profile, but that also shows all posts you made in between. I don't think there is a page for given reactions only. You can "watch" a thread, or use browser bookmarks or similar tools.
The forum doesn't track how many threads were started by...
NASA Updates on Starship Refueling, as SpaceX Prepares Flight 4 of Starship
* The internal fuel transfer test during the last flight was successful
* The fourth launch is planned in May, maybe as early as the second week
* A fuel transfer between two ships is planned for 2025
I can reproduce the problem. The verification works for me but then I'm not logged in on the contact pact, and can't login either.
@Greg Bernhardt.
https://www.physicsforums.com/misc/contact
You can still send a mail manually.
Starliner passed its flight readiness review for the crewed flight test, scheduled for May 7. It is expected to stay at the ISS for about one week.
If successful, it will become the second privately developed spacecraft to launch astronauts to orbit, four years after Dragon. It will be the first...
The energy is not generated, it is just converted from one type to another.
The mass changes. What is unclear?
As an example, a hydrogen atom has a slightly smaller mass than the sum of a proton mass plus an electron mass.