Hubble gazes at a star-studded skyfield

This star-studded image from the NASA/ESA Hubble Space Telescope shows the heart of the globular cluster NGC 6638 in the constellation Sagittarius. The star-strewn observation highlights the density of stars at the heart ...

Astronomy data and the search for habitable worlds

In 1610, Galileo Galilei peered through a telescope and observed, "I have seen Jupiter accompanied by three fixed stars, totally invisible by their smallness. The planets are seen very rotund, like little full moons." In ...

Sunrise III found safe at landing site

Following the termination of the flight of the balloon-borne solar observatory Sunrise III on July 10, team members have reached the landing site and found the observatory's science payload largely intact. According to current ...