by neufer » Fri Feb 28, 2020 3:03 pm
https://en.wikipedia.org/wiki/Electron_(rocket) wrote:
<<Electron is a two-stage orbital expendable launch vehicle (with an optional third stage) developed by the American aerospace company Rocket Lab to cover the commercial small satellite launch segment. Its Rutherford engines, manufactured in California, are the first electric-pump-fed engine to power an orbital rocket.
Electron is designed to launch a 150 to 225 kg payload to a 500 km Sun-synchronous orbit. In October 2018 Rocket Lab opened a factory large enough to produce more than 50 rockets per year according to the company. The price for delivering up to 150 kg to a 500 km Sun-synchronous orbit is about $6 million per launch, which offers the only dedicated service at this price point. During its second flight on 21 January 2018, Electron reached orbit and deployed three CubeSats.
Moon Express contracted to launch a lunar lander on an Electron to compete for the Google Lunar X Prize. None of the contenders met the prize deadline, but the launch remains scheduled. The rocket is launched from Rocket Lab Launch Complex 1 on Mahia [the word māhia means "indistinct sound" or "
scrofulous swelling"] Peninsula, New Zealand.>>
https://en.wikipedia.org/wiki/Ernest_Rutherford wrote:
<<Ernest Rutherford (30 August 1871 – 19 October 1937) was a New Zealand-born British physicist who came to be known as the father of nuclear physics. In early work, Rutherford discovered the concept of radioactive half-life, the radioactive element radon, and differentiated and named alpha and beta radiation. This work was performed at McGill University in Montreal, Quebec, Canada. It is the basis for the Nobel Prize in Chemistry he was awarded in 1908 for which he was the first Canadian and Oceanian Nobel laureate. At Cambridge, Rutherford started to work with J. J. Thomson on the conductive effects of X-rays on gases, work which led to the discovery of the electron which Thomson presented to the world in 1897.>>
https://en.wikipedia.org/wiki/Positronium wrote:
<<Positronium (Ps) is a system consisting of an electron and its anti-particle, a positron, bound together into an exotic atom, specifically an onium. The system is unstable: the two particles annihilate each other to predominantly produce two or three gamma-rays, depending on the relative spin states. The orbit and energy levels of the two particles are similar to that of the hydrogen atom (which is a bound state of a proton and an electron). However, because of the reduced mass, the frequencies of the spectral lines are less than half of the corresponding hydrogen lines.
Positronium in high energy states has been predicted to be the dominant form of atomic matter in the universe in the far future if proton decay occurs. Natural formation of positronium atoms is predicted to begin in about 1085 years. These atoms are postulated to have sizes vastly exceeding the present observable universe, with estimated initial radii of a trillion megaparsecs. Due to their immense sizes, natural positronium atoms would have very long lifetimes, estimated at 10141 years.>>
[float=left][img3=""]https://upload.wikimedia.org/wikipedia/commons/thumb/9/91/Electron_Orthographic.png/33px-Electron_Orthographic.png[/img3][/float][quote=https://en.wikipedia.org/wiki/Electron_(rocket)]
<<Electron is a two-stage orbital expendable launch vehicle (with an optional third stage) developed by the American aerospace company Rocket Lab to cover the commercial small satellite launch segment. Its Rutherford engines, manufactured in California, are the first electric-pump-fed engine to power an orbital rocket.
Electron is designed to launch a 150 to 225 kg payload to a 500 km Sun-synchronous orbit. In October 2018 Rocket Lab opened a factory large enough to produce more than 50 rockets per year according to the company. The price for delivering up to 150 kg to a 500 km Sun-synchronous orbit is about $6 million per launch, which offers the only dedicated service at this price point. During its second flight on 21 January 2018, Electron reached orbit and deployed three CubeSats.
Moon Express contracted to launch a lunar lander on an Electron to compete for the Google Lunar X Prize. None of the contenders met the prize deadline, but the launch remains scheduled. The rocket is launched from Rocket Lab Launch Complex 1 on Mahia [the word māhia means "indistinct sound" or "[url=https://en.wikipedia.org/wiki/Mycobacterial_cervical_lymphadenitis]scrofulous swelling[/url]"] Peninsula, New Zealand.>>[/quote][quote=https://en.wikipedia.org/wiki/Ernest_Rutherford]
<<Ernest Rutherford (30 August 1871 – 19 October 1937) was a New Zealand-born British physicist who came to be known as the father of nuclear physics. In early work, Rutherford discovered the concept of radioactive half-life, the radioactive element radon, and differentiated and named alpha and beta radiation. This work was performed at McGill University in Montreal, Quebec, Canada. It is the basis for the Nobel Prize in Chemistry he was awarded in 1908 for which he was the first Canadian and Oceanian Nobel laureate. At Cambridge, Rutherford started to work with J. J. Thomson on the conductive effects of X-rays on gases, work which led to the discovery of the electron which Thomson presented to the world in 1897.>>[/quote][quote=https://en.wikipedia.org/wiki/Positronium]
<<Positronium (Ps) is a system consisting of an electron and its anti-particle, a positron, bound together into an exotic atom, specifically an onium. The system is unstable: the two particles annihilate each other to predominantly produce two or three gamma-rays, depending on the relative spin states. The orbit and energy levels of the two particles are similar to that of the hydrogen atom (which is a bound state of a proton and an electron). However, because of the reduced mass, the frequencies of the spectral lines are less than half of the corresponding hydrogen lines.
[b][color=#0000FF]Positronium in high energy states has been predicted to be the dominant form of atomic matter in the universe in the far future if proton decay occurs. Natural formation of positronium atoms is predicted to begin in about 10[sup]85[/sup] years. These atoms are postulated to have sizes vastly exceeding the present observable universe, with estimated initial radii of a trillion megaparsecs. Due to their immense sizes, natural positronium atoms would have very long lifetimes, estimated at 10[sup]141[/sup] years.[/color][/b]>>[/quote]