Draw a line between the 4 bright planets up after sunset now, and you’ll see they make an arc across the sky. In this photo, Michael Seeley in Florida contrasted the arc of planets with that of the Milky Way.
Viewed under a microscope, it resembles a human hair. But this is actually an extremely precious speck of dust – a tiny sample from the Itokawa asteroid, brought back to Earth by Japan’s Hayabusa mission.
At first glance, it’s just a square filled with tiny grains of static. But incredible as it is to imagine, every single point of light in this image is actually a distant galaxy, as observed by ESA’s Herschel Space Observatory.
Kairo Kiitsak captured an impressive display of noctilucent, or night-shining, clouds, in Simuna, Estonia on July 26, 2018. Noctilucent clouds are seen at high latitudes only from about mid-May to August. Wondrous, if you can catch them!