微信内可能无法直接打开本站。请点右上角 ··· → 在浏览器打开，或复制链接。
15,000 years of solar wind in four hours? A Seattle company gives it a go.
RSS 官方收录 · 可信分层展示
关键摘要
As part of its nuclear fusion processes, the Sun produces a particularly interesting isotope of helium, known as helium-3.…
- Some of this helium-3 escapes the Sun's gravitational pull as part of …
- Over billions of years, this wind has bombarded every body in the vici…
- Lacking a magnetic field or atmosphere, the Moon's surface has no barr…
摘要引擎：抽取
正文提要
As part of its nuclear fusion processes, the Sun produces a particularly interesting isotope of helium, known as helium-3. Some of this helium-3 escapes the Sun's gravitational pull as part of the solar wind, a stream of charged particles that emanates out across the Solar System.
Over billions of years, this wind has bombarded every body in the vicinity of the Sun, including Earth's Moon. Lacking a magnetic field or atmosphere, the Moon's surface has no barrier to prevent the constant flow of this wind.
This means that helium-3 has been striking the lunar soil, or regolith, for a long time. These helium ions penetrate only a little way into the individual grains of this soil, but periodically meteorites have struck the lunar surface to churn the soil, mixing some of this helium-3 a little below the surface.