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Earth

25 years ago Voyager 1 turned back towards our planet, and captured one of the most profound images ever taken – the pale blue dot. On the face of it, the little blue dot to screen-right appears insignificant. Yet, in its scope, it captured every human being that has ever lived and ever died, every wonder and every labor that mankind had then achieved in the relatively short history of our race. Read More
A new NASA study is predicting the occurrence of severe "megadroughts" across the United States in the second half of this century, that are set to be more extreme and prolonged than any droughts that have taken place in the region for the past 1,000 years. According to the study, one of the key driving forces behind the devastating droughts will be the prolific creation of human-produced greenhouse gasses. Read More
You may have been taught in school that the Earth is composed of layers, broadly separated into a rocky crust and mantle, outside of a liquid outer core and a small, solid iron inner core. It turns out, according to new research, that the inner core may itself have a distinct internal structure – an inner-inner core about half the diameter of the whole inner core. And this could reveal insights about our planet and its history. Read More
At some point in their lives, who hasn't looked up at the sky and gazed in wonder at Earth's closest companion? Hanging a dizzying 384,400 km (238, 606 miles) above us, the Moon has stood like a silent sentinel throughout our species' short existence. It has enticed some to visit and inspired others to look to the universe beyond. The Russian space agency Roscosmos recently released series of videos shot from the perspective of Earth, showing us what it would look like if other planets and stars took the place of our Moon and Sun. Read More
Space maneuvers have often been described as an orbital ballet, but the European Space Agency's (ESA) Cluster II satellites are currently in a ballet where the dancers are moving blindfolded at hypersonic speeds as they pass within a cosmic hairsbreadth of one another. That's because two of the Cluster satellites are flying within "touching distance" of one another as scientists try to learn more about the effects of solar wind on the Earth's magnetic field. Read More
The oceans are a mystery in more ways than one, but you might not expect the answers to come from a pack of electronics and a comet. But that's what the European Space Agency (ESA) says about the unmanned Rosetta probe orbiting comet 67P/Churyumov–Gerasimenko. Though 67P is making its first visit to the inner Solar System and won't come closer to the Earth than hundreds of millions of miles, it is throwing new light on one of the fundamental questions in Earth's history: Where did the oceans come from? Read More
Astronomers looking for exoplanets are using a fine-toothed comb – a fine-toothed astro-comb, to be precise. And just to make sure it works, the first planet they’ll be looking for is Venus. Developed by astronomers Chih-Hao Li and David Phillips of the Harvard-Smithsonian Center for Astrophysics, the astro-comb uses a new spectroscopic device installed in the Italian Telescopio Nazionale Galileo in the Canary Islands that will detect the beclouded planet by its gravitational effect on the Sun as a test of a potentially valuable tool in the hunt for Earth-like planets beyond our Solar System. Read More
As part of its Clean Space Initiative, the ESA is planning a satellite salvage mission called e.DeOrbit that would use a satellite to net space debris and remove it from low Earth orbit. To capture such debris using an autonomous system, it needs to be targeted effectively, which is difficult when the debris is tumbling unpredictably. To fine tune the design of the e.DeOrbit mission, the ESA will commission a study to shed light on why space debris tumbles the way it does. Read More
Since the first Mariner probes reached the Red Planet in the 1960s, it’s become clear just how very alien Mars is and how hard it is to find parallel examples of possible Martian life on Earth. However, it’s not impossible. Rebecca Mickol, a doctoral student in space and planetary sciences at the University of Arkansas, has discovered that two species of methane-producing bacteria can live in the harsh conditions on Mars, and may aid in the search for life there. Read More
As of April 30, NASA has been running its High Definition Earth Viewing Experiment (HDEV) which, as well as testing certain aspects such as a camera's ability to survive the radiation levels present in low-Earth orbit, is giving viewers the breathtaking experience of observing their planet in exquisite detail from space. Read More
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