This diagram shows a brown dwarf in relation to Earth, Jupiter, a low-mass star and the sun.
这张是褐矮星相对地球、木星、低质量恒星和太阳的对比图。
2
So we might expect 16 or 17 of the nearest 56 stars to be accompanied by planets and, given the current lack of data on very low-mass planets, it could easily be more.
For decades, astronomers have been confident that relatively low-mass stars such as our sun form by the gradual accretion, or buildup, of mass from a disk of gas and dust.