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One day in June 1195, around noon, something unusual took place near the city of London. A dark cloud appeared to give birth to a white orb of light, which dropped towards the Thames river, rising and falling in a spinning motion. The observation – recorded by the Benedictine monk Gervase of Christ Church … Read more
This article was originally published at The Conversation. The publication contributed the article to Space.com’s Expert Voices: Op-Ed & Insights. Jacco van Loon, Astronomer, Keele University Could the Earth stop spinning, and if it did, what would happen? – Paul, aged 12, Aberdeen, Scotland The Earth has been spinning since its birth, four and a half billion years … Read more
Scientists observed changes in the signals coming from rapidly-spinning stars called millisecond pulsars that might point to the existence of subtle space-time ripples vibrating throughout the entire universe. Millisecond pulsars are stellar remnants that spin hundreds of times per second, producing precise radio pulses that can act as a cosmic metronome. Scientists think that ripples … Read more