A new study published in Nature reveals that the Radcliffe Wave, a wave-shaped chain of stars and gas in our galactic neighborhood, is oscillating like a wave and may have passed over Earth 13 million years ago, potentially exposing our planet to a series of exploding stars. The wave's motion was detected using data from the Gaia project, and researchers speculate that it may have left unique isotopes on Earth. This discovery suggests that galaxies may be more dynamic than previously thought, and the cause of the wave's oscillation remains a mystery.
Astronomers have observed the Radcliffe Wave, an enormous wave-shaped chain of gaseous clouds in the Milky Way, oscillating through space-time like a stadium wave, using the motion of baby stars born in the gaseous clouds to trace its movement. This discovery, made possible by combining data from the European Space Agency's Gaia mission and the "3D Dust Mapping" technique, raises questions about the wave's origin and its implications for understanding galactic dynamics, as well as the role of dark matter in its motion.
[Daniel Fajkis] builds a rotary subwoofer on a $200 budget by mounting a large electric motor on the case of an ex-subwoofer to spin a fan. Using the rotor linkage of a model helicopter and a modified subwoofer speaker, the fan blades pitch and create a powerful gust of air oscillating at low frequencies, providing an impressive bass experience.
