New black hole merger bolsters Hawking area theorem

Physicists spliced merger’s gravitational signal into isolated frequencies to determine surface areas. Back in 1971, the late physicist Stephen Hawking made an intriguing prediction: The total surface area of a black hole cannot decrease, only increase or remain stable. So if two black holes combine, the newly formed black…

Has Perseverance found a biosignature on Mars?

Interpreting the data is tricky because other non-biological processes could account for the findings. Last year, we reported on the discovery of an intriguing arrow-shaped rock on Mars by NASA’s Perseverance rover. The rock contained chemical signatures and structures that could have been formed by ancient microbial life. Granted,…