This week, a citizen scientist spotted a never-before-seen comet in data from the sun-observing SOHO spacecraft. It was SOHO’s 4,000th comet discovery. Learn more and watch comets sweep near the sun in this video.
Researchers in Europe have now confirmed the universality of free fall – which Einstein called his most fortunate thought – with extremely high precision. To do it, they spent 8 years tracking a triple star system containing a millisecond pulsar.
Solar Orbiter swept as close as 50 million miles (77 million km) to our sun’s surface. Now scientists are at work testing the spacecraft’s 10 science instruments, including the 6 telescopes on-board. New images, to be released in mid-July, will be the closest of the sun ever captured.
Researchers from Germany and the US have discovered an exoplanet less than twice the size of Earth orbiting at about the same distance from its star, making it the closest analog to the Earth-sun system known so far.