Scary times for Europe's comet-chaser Rosetta (Update)
Europe's pioneering probe Rosetta battled breakdowns with navigation and communication with Earth after it ran into blasts of dust and gas from the comet it is tracking, mission control said Thursday.
Life needs an atmosphere, but how much is too much?
How much atmosphere is too much for life? As scientists discover more super-Earths and mini-Neptunes, the question becomes more relevant.
OSIRIS-REx mission passes critical milestone
NASA's groundbreaking science mission to retrieve a sample from an ancient space rock has moved closer to fruition. The Origins Spectral Interpretation Resource Identification Security Regolith Explorer (OSIRIS-REx) ...
How can dark matter cause chaos on Earth every 30 million years?
In 1980, Walter Alvarez and his group at the University of California, Berkeley, discovered a thin layer of clay in the geologic record, which contained an unexpected amount of the rare element iridium. ...
ESA's planetary defence test set for 2020
If an asteroid were spotted headed towards Earth, what could humanity do about it? ESA's latest mission is part of a larger international effort to find out.
Total lunar eclipse before dawn on April 4th
An unusually brief total eclipse of the Moon will be visible before dawn this Saturday, April 4th, from western North America. The eclipse happens on Saturday evening for Australia and East Asia.
Catalyst redefines rate limitations in ammonia production
Studies by researchers at Tokyo Institute of Technology have developed a catalyst that is so effective at promoting dissociation of the nitrogen bond in ammonia production reactions that it is no longer the ...
Eiffel Tower goes dark in symbolic move for Earth Hour
The Eiffel Tower has gone dark briefly to mark Earth Hour, the campaign to raise awareness about climate change.
Lights out in Australia as Earth Hour kicks off
The Sydney Harbour Bridge and the sails on the nearby Opera House went dark Saturday, as lights on landmarks around Australia were switched off for the global climate change awareness campaign Earth Hour.
Metals used in high-tech products face future supply risks
In a new paper, a team of Yale researchers assesses the "criticality" of all 62 metals on the Periodic Table of Elements, providing key insights into which materials might become more difficult to find in ...
NASA asteroid hunter spacecraft data available to public
Millions of images of celestial objects, including asteroids, observed by NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) spacecraft now are available online to the public. The data ...
New way to calculate how long it would take to fall through a hole in the Earth
Explosions of Jupiter's aurora linked to extraordinary planet-moon interaction
On Earth, bursts of particles spewed by the Sun spark shimmering auroras, like the Northern Lights, that briefly dance at our planet's poles. But, on Jupiter, there's an auroral glow all the time, and new ...
A stiff new layer in Earth's mantle: Why the planet's conveyor belt hangs up 930 miles deep
By crushing minerals between diamonds, a University of Utah study suggests the existence of an unknown layer inside Earth: part of the lower mantle where the rock gets three times stiffer. The discovery may ...