In this week’s image from the Hubble Space Telescope, you can see an unusual type of galaxy called an ultra-diffuse galaxy. The galaxy GAMA 526784 is shown as a smear of light across the center of th… [+2088 chars]
A Mount Everest-sized asteroid that swept by Earth in 1989 will be coming back around for a much closer visit at the end of May. The asteroid 1989 JA was discovered on May 1, 1989, by Eleanor Heli… [+4551 chars]
The latest generation of optical atomic clocks are accurate to less than one-tenth of a second over the age of the universe (13.8 billion years). So why are they still measuring the length of a secon… [+11777 chars]
The surface of Saturn's moon Titan looks a bit like Earth and a new study finally explains why. Saturn's largest moon Titan features some very Earth -like landscapes: lakes and rivers, labyrint… [+3309 chars]
TUCSON, Ariz. (AP) Dwelling on the past has earned University of Arizona researcher Jessica Tierney a prestigious, $1 million award from the National Science Foundation.The Alan T. Waterman Award is … [+3358 chars]
The 4-day-old waxing crescent Moon on April 8, 2019 in a blend of short and long exposures to bring ... [+] out the faint Earthshine on the dark side of the Moon and deep blue twilight sky while reta… [+3340 chars]