Every second, lightning flashes some 50 times on Earth. Together these discharges coalesce and get stronger, creating electromagnetic waves circling around Earth, to create a beating pulse between the ground and the lower ionosphere, about 60 miles up in the atmosphere. This electromagnetic signature, known as Schumann Resonance, had only been observed from Earth’s surface…
A sprawling collection of galaxies and star clusters surrounding our own Milky Way is challenging long-standing theories on the existence of dark matter, the mysterious substance thought to pervade the universe. The structure of satellite galaxies and star clusters around the Milky Way is so vast that it reaches across a million light-years – 10…
Geomagnetic storms generated by the interaction between the electrically charged solar particles and the earth’s own magnetic field could have serious consequences. They are able to overload electricity supply networks and cause breakdowns, cause communications and navigation satellites to fail, and endanger astronauts.
A new estimate of the number of habitable planets orbiting the most common type of stars in our galaxy could have huge consequences for the search for life. According to a recent study, tens of billions of planets around red dwarfs are likely capable of containing liquid water, dramatically increasing the potential to find signs…
Invisible dark matter particles may regularly pass through our bodies, and dozens to thousands of these particles may be colliding with atoms inside us every year, according to a new calculation. Dark matter is one of the greatest scientific mysteries of our time — an invisible substance thought to make up five-sixths of all matter…
A star already known to host five alien planets may actually be home to a whopping nine full-fledged worlds – a planetary arrangement that, if confirmed, would outnumber our own solar system and set a new record for the most populated system of extrasolar planets yet found. The sun-like star, called HD 10180, is located…
Research by a Danish physicist suggests that the explosion of massive stars – supernovae – near the Solar System has strongly influenced the development of life. Professor Henrik Svensmark of the Technical University of Denmark sets out his novel work in a paper in the journal Monthly Notices of the Royal Astronomical Society. When the…
A new company backed by two Google Inc. billionaires, film director James Cameron and other space exploration proponents is aiming high in the hunt for natural resources—with mining asteroids the possible target. The venture, called Planetary Resources Inc., revealed little in a recent press release except to say that it would “overlay two critical sectors—space…
Think of all the data humans have collected over the long history of astronomy, from the cuneiform tablets of ancient Babylon to images taken by the Hubble Space Telescope. If we could express all of that data as a number of bits, our fundamental unit of information, that number would be, well, astronomical. But that’s…
When the sun really acts up, spewing out heaps of charged particles in a burst called a coronal mass ejection, space weather can get menacing—and future storms could be even worse than the ones we’ve experienced. Solar storms can damage power grids, fry communications satellites and disrupt aircraft electronics. A few oft-cited historical examples: a…