Sunday, August 24, 2014
Atomic clocks on the International Space Station will study time and space

NIST-F1 contributes to the international group of atomic clocks that define Coordinated Universal Time (UTC), the official world time. Because NIST-F1 is among the most accurate clocks in the world, it makes UTC more accurate than ever before. (Credit: Time and Frequency Division of NIST’s PML)
Powerful solar flare reaching M5.9 erupted from Region 2149
Solving Stephen Hawking’s black hole paradox
In search of alien life? Seek out the smog

Artist’s conception of the atmosphere of an Earth-like planet displaying a brownish haze as the result of widespread pollution. (Credit: Christine Pulliam/Harvard-Smithsonian Center for Astrophysics)
Stellar snow globe mystery solved with Hubble’s help

This new NASA/ESA Hubble Space Telescope image shows the globular cluster IC 4499. A cosmic archaeological dig has unfolded within a giant ball of stars some 55,000 light-years away. (Credit: NASA)
Squeezed light for advanced gravitational wave detectors and beyond(PDF)
![Top: A typical set-up for squeezing injection in the first demonstrations of squeezing at GEO600 and LIGO, both using DC readout [36,37]. Proposed design for future detectors. This design features an in-vacuum OPO. The remainder of the squeezed light source remains outside of vacuum. (Credit: E. Oelker, L. Barsotti, S. Dwyer, D. Sigg, and N. Mavalvala)](https://cosmologyandtime.files.wordpress.com/2014/08/screen-shot-2014-08-24-at-10-39-30-am.png?w=470&h=619)
Top: A typical set-up for squeezing injection in the first demonstrations of squeezing at
GEO600 and LIGO, both using DC readout [36,37]. Bottom: Proposed design for future detectors. This design features an in-vacuum OPO. The remainder of the squeezed light source remains outside of vacuum. (Credit: E. Oelker, L. Barsotti, S. Dwyer, D. Sigg, and N. Mavalvala)
Mercury’s transit: An unusual spot on the sun
The invisible galaxies: Radio images of the whirlpool galaxy and beyond

Researchers have developed a flexible structure that can sense ambient conditions and adjust its color to match them. At the moment, it only works in black and white. (Credit: PNAS, Timmer)