Hubble is doing double-duty as it peers into the distant universe to observe the Frontier Fields. While one of the telescope’s cameras looks at a massive cluster of galaxies, another camera will simultaneously view an adjacent patch of sky. This second region is called a “parallel field”—a seemingly sparse portion of sky that will provide […]Read more "Cluster and Parallel Fields: Two for the Price of One"
The gravitational lens created by the galaxy cluster MACS J1149 already has a record of stirring up excitement. In 2012, observations from NASA’s Hubble and Spitzer space telescopes found the cluster had magnified a distant background galaxy. The galaxy turned out to be extremely far away — in fact, the light we detected from the […]Read more "Meet the Frontier Fields: MACS J1149.5+2223"
MACS J0717 has been observed by telescopes in many visible and invisible wavelengths of light. It is one of the most massive galaxy clusters known, and it is the largest known gravitational lens. Of all of the galaxy clusters known and measured, MACS J0717 lenses the largest area of the sky. The Massive Cluster Survey […]Read more "Meet the Frontier Fields: MACS J0717.5+3745"
Einstein’s theory of general relativity tells us how the curvature of space causes the path of light from a more distant galaxy to bend as the light passes near a massive cluster of galaxies. The cluster of galaxies acts as a lens, magnifying and distorting the light from the more distant galaxy. This often leads […]Read more "Meet the Frontier Fields: MACS J0416.1-2403"
Abell 2744, also known as Pandora’s Cluster, is a giant pile-up of four smaller galaxy clusters. Abell 2744, and its neighboring parallel field, are among the first targets of the Frontier Fields program. The Abell catalogue of galaxy clusters was first compiled by astronomer George O. Abell in 1958, with over 2,700 galaxy clusters observable […]Read more "Meet the Frontier Fields: Abell 2744"
What happens when atoms get really, really cold? Scientists know that they slow down as they approach absolute zero, but Earth’s pesky gravitational pull makes it hard to observe what happens once they hit extreme lows. But come August, that’s going to change when NASA creates the coldest place in the known universe. That chilly climate will […]Read more "I S S Will Soon Be the Coldest Place in the Universe..!"
Computational fluid dynamics (CFD) simulations can easily generate 100+ terabytes of data. Scientists and engineers depend on supercomputers with hundreds of thousands of computing cores to solve the complex equations involved. Read about successful simulations breaking the million-core barrier. When Lawrence Livermore National Laboratory (LLNL) in California, US, began offering outside researchers compute time on […]Read more "One million cores: A breakthrough in CFD simulation"