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How can you find out the finger print of gravitational wave on the microwaves background radiation?
It is B-polarization. But what is that?
4 AnswersAstronomy & Space7 years agoGiven another 30 years, which country will be the leading nation in Space program?
USA, Russia, or China?
4 AnswersAstronomy & Space8 years agoWhat is its source and citation ? "Every thing is kept evolving and changing."?
Who had said that, and in what book ?
1 AnswerPhilosophy9 years agoWhy NASP was canceled ?
NASP stands for National Aerospace Plane. Was it ahead of our time?
Mach 6-7 scramjet had been tested. Does hypersonic flight have a future ?
2 AnswersEngineering1 decade agoWhen was the first time liquid hydrogen and oxygen used in space mission ?
It was known that SS ME used liquid hydrogen and oxygen in space shuttle flight. Did rocket
Saturn V already use liquid hydrogen and oxygen ?
2 AnswersEngineering1 decade agoWhat is a habitable planet and how far away is it ?
2.2 light years, 20.5 light years or 130 light years (HR 8799)
9 AnswersAstronomy & Space1 decade agoWhy school children of certain countries are better in mathematics and science ?
US is not number one in test scores, although the achievements in (graduate schools, and the society's) science and mathematics are.
5 AnswersHigher Education (University +)1 decade agoIs the UFO's flying saucer a smart design ?
If it keeps spinning to achieve stability, it is not a good design. Aerodynamically, it is ok.
9 AnswersAstronomy & Space1 decade agoMoon landing, how does it help the exploration of Mars ?
Provided the Moon bases were established and well planned.
2 AnswersAstronomy & Space1 decade agoHow do I find a geometry book with a proof of nine points circle ?
Three points of mid-point of each side of a triangle, three points of perpendiculars intercepts with opposite sides,
three points of angle bisectors intercepts with the opposite sides, all together 9 points form a circle.
It was in geometry text books of high school in Asian countries.
1 AnswerMathematics1 decade agoWhy doesn't my orange or lemon tree bear fruits ? It is at least 7 years old.?
The apricot tree has fruits this year, but it did not have any fruits last year.
1 AnswerBotany1 decade ago