Spectral analysis suggests asteroids Bennu and Ryugu are part of Polana family

[Here’s the original article as published by Southwest Research Institute](https://www.swri.org/newsroom/press-releases/swri-study-supports-theory-asteroids-bennu-ryugu-are-part-of-the-polana-family).

It’s the same article, but there are no ads or tracking. It’s a press release, so there’s also a media contact. Phys.org has added links to the paper to their copy of the article.

Phys.org is a content aggregator. They copy content from free or licensed (?) sources and then add ads and tracking and whatever else. Reading the original article also usually supports the publishing organization, since you’ll be at their site – for SwRI you can learn who they are, what they do, etc.