Heavens

Best evidence yet for coronal heating theory detected by NASA sounding rocket

Best evidence yet for coronal heating theory detected by NASA sounding rocket

In addition to having a lower cost, sounding rockets offer a valuable test bed for new technology that may subsequently be flown on longer-term space missions. Another advantage of sounding rockets is that the instruments parachute back to the ground so they can be recovered and re-used. The EUNIS mission will be re-tuned to focus on a different set of solar wavelengths – ones that can also spot the extremely high temperature material representative of nanoflares -- and fly again sometime in 2016.

On-chip topological light

On-chip topological light

Topological transport of light is the photonic analog of topological electron flow in certain semiconductors. In the electron case, the current flows around the edge of the material but not through the bulk. It is "topological" in that even if electrons encounter impurities in the material the electrons will continue to flow without losing energy.

A train of 5 tropical cyclones in the Central and Eastern Pacific

A train of 5 tropical cyclones in the Central and Eastern Pacific

A train of developing tropical low pressure areas stretch from the Eastern Pacific Ocean into the Central Pacific and they were captured in an image from NOAA's GOES-West satellite on August 1. The train of five tropical lows include the remnants of Tropical Storm Genevieve and newly developed Tropical Storm Iselle.

NASA finds heavy rainfall and wind shear in newborn Tropical Storm Bertha

NASA finds heavy rainfall and wind shear in newborn Tropical Storm Bertha

At 11 a.m. EDT (1500 UTC) the National Hurricane Center noted that the center of Tropical Storm Bertha was located near latitude 14.0 north and longitude 58.9 west, about 70 miles (110 km) southeast of Barbados. It was moving toward the west-northwest near 21 mph (33 kph) and that general motion is expected to continue for the next couple of days. NHC noted that Bertha is expected to move through the central Lesser Antilles during the night (August 1) and approach the Virgin Islands and Puerto Rico on Saturday, August 2. The estimated minimum central pressure is 1008 millibars.

NASA sees Tropical Storm Halong's 'best side'

NASA sees Tropical Storm Halong's 'best side'

NASA satellite data showed Tropical Storm Halong's "best side" or most powerful side was east of its center. That's where the coldest cloud top temperatures and strongest thunderstorms appeared on satellite imagery.

NASA eyes powerful bands of thunderstorms in newborn Tropical Storm Iselle

NASA eyes powerful bands of thunderstorms in newborn Tropical Storm Iselle

Tropical Storm Iselle was born in the Eastern Pacific Ocean soon after NASA's Aqua satellite gathered infrared imagery on the storm that showed powerful thunderstorms wrapping into developing storm's center. Iselle is not close enough to land to cause any watches or warnings.

Mapping the optimal route between two quantum states

As a quantum state collapses from a quantum superposition to a classical state or a different superposition, it will follow a path known as a quantum trajectory. For each start and end state there is an optimal or "most likely" path, but it is not as easy to predict the path or track it experimentally as a straight-line between two points would be in our everyday, classical world.

'Active' surfaces control what's on them

CAMBRIDGE, Mass-- Researchers at MIT and in Saudi Arabia have developed a new way of making surfaces that can actively control how fluids or particles move across them. The work might enable new kinds of biomedical or microfluidic devices, or solar panels that could automatically clean themselves of dust and grit.

Companion planets can increase old worlds' chance at life

Having a companion in old age is good for people — and, it turns out, might extend the chance for life on certain Earth-sized planets in the cosmos as well.

Planets cool as they age. Over time their molten cores solidify and inner heat-generating activity dwindles, becoming less able to keep the world habitable by regulating carbon dioxide to prevent runaway heating or cooling.

Scientist underlines threat of inevitable 'solar super-storms'

In this month's issue of Physics World, Ashley Dale from the University of Bristol warns of the "catastrophic" and "long-lasting" impacts of "solar super-storms" and the dangers we face if the threat continues to go unnoticed.