Not so long ago the ocean floor was as unknown as the far side of the Moon. Now, an international team of scientists is using satellite data to chart the deep ocean by measuring the Earth's gravitational field. The result is a new, highly-detailed map that covers the three-quarters of the Earth's surface that lies underwater. The map is already providing new insights into global geology.
NASA has identified evidence of ice volcanoes present on the surface of the dwarf planet Pluto. The news comes as New Horizon's team discusses new scientific discoveries made by the spacecraft during its July flyby, at the 47th Annual Meeting of the Division for Planetary Sciences (DPS) of the American Astronomical Society, in Maryland.
Helium is the second most abundant element in the Universe, but it's relatively rare on Earth – so much so that some have called for a ban on party balloons to ward off a worldwide shortage. However, a team of scientists led by Diveena Danabalan of Durham University conducted a new study that indicates that there may be vast new sources of the gas in the western mountain regions of North America.
New images taken from NASA's Cassini spacecraft appear to show unusual redish arcs marking the surface of the Saturn's icy moon Tethys. The strange features cover significant stretches of the moon's surface, and have left astronomers baffled as to their origins.
New ESA images allow the public to take an in-depth tour of the Imhotep region of 67P/Churyumov-Gerasimenko (67P). Located close to the comet's equator, Imhotep is thought to be one of the most geologically diverse regions of 67P, with observations of the area contributing greatly to our understanding of the wandering celestial bodies.
Over the last few years, many possible explanations have been bandied about for the so-called pause in climate change, a plateau in global surface air temperatures that is out of step with rising greenhouse gas concentrations. But now an international research effort is laying responsibility at the feet of volcanic eruptions, whose particles it has found reflect twice as much solar radiation as previously believed, serving to temporarily cool the planet in the face of rising CO2 emissions.
If you've ever been to Yellowstone National Park in Wyoming, you may have been aware of two things; its magnificent grandeur, and the fact that it's an active supervolcano that, if it ever erupted again, would be worst event to hit the Earth since the dinosaur-killing asteroid. To help keep an eye out for this and similar events, a team at the University of Zurich have developed a means of monitoring volcanic events using atomic clocks.
ESA's Venus Express spacecraft has found the best evidence yet of active lava flows on Venus. Earlier missions to Venus have shown that the surface bears the unmistakable scarring of fierce, ancient volcanic activity. However, prior to Venus express, no mission had been successful in directly imaging clues to contemporary volcanism. This quirk has baffled scientists for years, as it has long been assumed that Venus hosts an internal heat source, and that heat has to escape somehow.
NASA's Mars Curiosity
rover has been forced to alter its route after being faced with
dangerous terrain. The current objective of the robotic explorer is
to investigate a geological boundary between two distinct forms of
bedrock as a part of its mission to explore the heights of Mount
Sharp, and ultimately unlock the secrets of the Red Planet's ancient
ESA's Mars Express orbiter has captured images that may indicate the presence of supervolcanoes on the surface of Mars. If the findings are later confirmed, the existence of these leviathan volcanoes may greatly inform current theories on climate formation, as eruptions from the supervolcanoes could have dramatically altered the Martian global environment.