Light-colored feathers may help migrating birds stay cool on long flights
Evidence emerges for dark-matter free galaxies. A team of astronomers has found no trace of dark matter in the galaxy AGC 114905, despite taking detailed measurements over a course of 40-hours with state-of-the-art telescopes. The galaxy in question is about 250 million light-years away.
Color-Changing Magnifying Glass Gives Clear View of Invisible Infrared Light
