In molten sandstone extracted by prospectors a century ago, an international team of scientists has discovered microscopic crystals telling of unimaginable pressures and temperatures when a 12-kilometer asteroid formed Meteor Crater in northern Arizona some 49,000 years ago.
Two tropical cyclones in the Eastern Pacific Ocean have see-sawed in strength today, July 26, 2016.
Infrared data from NASA's Aqua satellite showed a transition within Tropical Storm Frank over three days, and now Frank has become the Eastern Pacific's fifth hurricane.
Tropical Storm Darby weakened to a remnant low pressure system in the Central Pacific Ocean today, July 26. NASA's Aqua satellite and RapidScat instrument provided a 'last look' at Darby when it was still a tropical storm the previous day.
Tropical Depression 05W strengthened into a tropical storm and was renamed Mirinae as NASA's Aqua satellite passed over the South China Sea and captured a visible image of the storm.
Novel observations by an international group of researchers with the CanariCam instrument on the Gran Telescopio CANARIAS provide new information about magnetic fields around the active nucleus of the galaxy Cygnus A. This is the first time that polarimetric observations in the middle infrared region of the spectrum have been made of the nucleus of an active galaxy.
An international group of researchers has used the GTC to observe a superluminous supernova almost from the moment it occurred. It has revealed surprising behaviour, because this supernova showed an initial increase in brightness which later declined for a few days, and later increased again much more strongly. The scientists have used the data observed at the GTC and has combined them with other observations to try to explain the origin of the phenomenon.
The largest dwarf planet in the asteroid belt has a curious lack of big craters. Arizona State University planetary scientist David Williams is on the case.
A team of scientists led by Southwest Research Institute made a puzzling observation while studying the size and distribution of craters on the dwarf planet Ceres.
An international team of researchers have discovered an extremely rare, double source plane gravitational lensing system, in which two distant galaxies are simultaneously lensed by a foreground galaxy, as part of the on-going Subaru Strategic Survey with Hyper Suprime-Cam. The discovery was made not in an astronomer's office, but in a classroom. The team dubbed the system 'Eye of Horus'. Such a rare system is a unique probe of fundamental physics of galaxies and cosmology.