Astronomers have discovered a distant planet with an abundance of helium in its atmosphere, which has swollen to resemble an inflated balloon.
Although helium is a rare element on Earth, it is ubiquitous in the universe. It is, after hydrogen, the main component of stars and gaseous giant planets. Despite its abundance, helium was only detected recently in the atmosphere of a gaseous giant by an international team. The team, this time led by UNIGE researchers, has observed for the first time how this gas escapes from the overheated atmosphere of an exoplanet, literally inflated with helium.
A new study, led by scientists from the Instituto de Astrofísica de Canarias (IAC), reveals that the giant exoplanet WASP-69b carries a comet-like tail made up of helium particles escaping from its gravitational field propelled by the ultraviolet radiation of its star.
Yale scientists are part of a new international experiment that challenges previous claims about the detection of non-luminous dark matter.
The Earth formed relatively quickly from the cloud of dust and gas around the Sun, trapping water and gases in the planet's mantle, based on neon isotopes from the depths of the Earth and deep space. Apart from settling Earth's origins, the work could help in identifying extrasolar systems that could support habitable planets.
New research could shed light on the 'missing' dark matter and dark energy that make up 95 percent of our universe and yet are wholly invisible to us.
Tropical Cyclone Owen appeared disorganized on satellite imagery as it moved through the Coral Sea in the Southern Pacific Ocean. Imagery from the Suomi NPP satellite showed that Owen was being stretched out and had weakened from wind shear.
Heavy precipitation recently fell in areas of California that were recently devastated by deadly wildfires such as the Camp Fire and the Woolsey fire. This flooding rainfall has resulted in evacuations in burn scarred areas such as Butte County where the deadly Camp Fire hit this month. NASA used data from satellites and other sources to calculate the amount of rainfall that has occurred recently.
Harnessing nuclear fusion, which powers the sun and stars, to help meet earth's energy needs, is a step closer after researchers showed that using two types of imaging can help them assess the safety and reliability of parts used in a fusion energy device.
Researchers from the University of Portsmouth have made vital contributions to the observations of four new gravitational waves, which were announced this weekend (Dec. 1).