An abandoned SpaceX rocket is about to crash into the Moon. The real problem comes next
Gregory Radisic, Bond University In the early hours of August 5 (UTC), an abandoned SpaceX rocket stage is…
Too many satellites? Earth’s orbit is on track for a catastrophe – but we can stop it
Astronomer’s view of a star obscured by streaks from Starlink satellites. Rafael Schmall/Wikimedia Commons, CC BY Gregory Radisic,…