... Bright sunlight glints and long dark shadows dramatize this image of the lunar surface taken by Apollo 11 astronaut Neil Armstrong, the first to walk on the Moon. ... Clearing Skies . ... NGC 1569: Heavy Elements from a Small Galaxy . ... For astronomers, elements other than hydrogen and helium are sometimes considered to be simply "heavy elements". ... The bulging center of our Milky Way Galaxy, dark cosmic clouds, the thin galactic plane, and even nearby galaxies are easy to spot in this sky view....