"If our solar system is indeed moving this fast, we need to question fundamental assumptions about the large-scale structure ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

Australian National University provides funding as a member of The Conversation AU. In May 2020, some unusual rocks containing distinctive greenish crystals were found in the Erg Chech sand sea, a ...