Astronomers discovered the closest black hole to Earth, just 1,600 light-years away. A partner star still orbits the dormant black hole, giving astronomers an opportunity to study a binary system relatively nearby.
Researchers found conditions that cause wildfires in the Arctic significantly increased since 1982, so extreme fire seasons could become more common. That puts the region’s permafrost at risk of melting, which would release enormous amounts of carbon and methane into the atmosphere.
Scientists found vaccinations using senescent cancer cells — which no longer reproduce, but aren’t dead — are more effective than vaccinating with dead cancer cells. The senescent cells trigger the body to attack living cancer cells, whether they’re introduced before or after tumors form.
Scientists determined the Hunga Tonga-Hunga Ha’apai eruption in January 2022 produced the highest volcanic ash plume ever recorded. Observations from three satellites showed it reached 57 kilometers (35 miles) high, touching the Earth’s mesosphere.
Geobiologists determined the first known mass animal extinction at the end of the Ediacaran Period 550 million years ago was caused by plummeting oxygen levels. Around 80 percent of animals on Earth died as a result, and researchers still don’t know what caused the drop in oxygen.