Phys.org What is dark energy? One of science’s great mysteries, explained Astrobitica March 20, 2025 (Last updated: March 20, 2025) 1 minute read Dark energy makes up roughly 70% of the universe, yet we know nothing about it. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: Dark energy seems to be changing, rattling our view of universeNext: Dark skies above world’s best astronomy sites could be ruined by new energy project Related Stories Phys.org Astronomers catch hot birth of galaxy cluster more than 11 billion light-years away Astrobitica August 19, 2026 Phys.org Mars attacks: How much dust from the red planet is safe to breathe? Astrobitica August 18, 2026 Phys.org NASA’s LRO images Falcon 9 crater on moon, learns new details Astrobitica August 18, 2026