Using the Southern African Large Telescope (SALT), astronomers have conducted spectroscopic and imaging observations of the planetary nebula WR 72. They discovered hydrogen-poor knots in the central part of the nebula, which could be helpful in improving knowledge about the nature of this object. The finding is detailed in a paper published December 23 on arXiv.org.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/wr72isaplane.jpg)
Source:
https://phys.org/news/2020-01-planetary-nebula-wr-hydrogen-poor.html