Dark matter article,
https://phys.org/news/2018-10-gravitational-dark.html
Dark Energy/Expansion of the Universe article,
https://phys.org/news/2018-10-gravitational-universe-expansion.html
Seems to be Gravitational Wave day - Using Gravitational Waves to learn about the expansion of the universe and even Dark Energy is a rather obvious idea. So is detecting Dark Matter. This article is suggesting the use of Gravitational Waves to learn about Dark Matter because of a "Dark Matter/Dwarf Galaxy black holes" correlation.
- LISA is mentioned in both articles. LIGO and another Gravitational Wave detector will be back online and working together in 2019; so, you know there will be more black hole merger and newtron star merger detections. But, it won't be till LISA gets launched, that we can find primordial/Big Bang Gravitational Waves. Now, that's going to be exciting!