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The two hemispheres of Mars are more different from any other planet in our solar system. Non-volcanic, flat lowlands characterize the northern hemisphere, while highlands punctuated by countless volcanoes extend across the southern hemisphere. Although theories and assumptions about the origin of this so-called and often-discussed Mars dichotomy abound, there are very few definitive answers. Geophysicists are now providing a new explanation.
NWA 7034, a meteorite found a few years ago in the Moroccan desert, is like no other rock ever found on Earth. It's been shown to be a 4.4 billion-year-old chunk of the Martian crust, and according to a new analysis, rocks just like it may cover vast swaths of Mars.
Related: Gully patterns document Martian climate cycles
Related: 'Knobby terrain' a sign of Mars's explosive past
Scientists who claimed last year to have found a pattern in the sky left by the super-rapid expansion of space just fractions of a second after the Big Bang were mistaken.
Related: Could a new proposed particle help to detect Dark Matter?
Philosopher Brad Skow’s new book says it does — but not in the way you may think.
Related: Black holes do not exist where space and time do not exist, says new theory
Our Milky Way could be harbouring a cosmic "wormhole"—that exotic short cut across the Universe made famous in science fiction shows and films—according to a team of scientists in India, Italy and the USA.
Alt: Wormhole to another galaxy may exist in Milky Way
Five Earth-sized planets have been identified around a distant star in the Milky Way galaxy in a discovery that raises the possibility of eventually finding another rocky planet where water-based life may exist, scientists said.
Alt: Ancient planets are almost as old as the universe
Alt: Oldest Planetary System Discovered, Improving the Chances for Intelligent Life Everywhere
Astronomers say they have discovered a planet with a gigantic ring system that is 200 times larger than that around Saturn.
Asteroid mining may become a multispecies affair.
Our planet's trusty magnetic field—an invisible barrier created by the churning of molten-hot matter in Earth's core—protects us from the lethal space radiation that engulfs most of the known universe. Without this field, Earth today would look as barren as Mars. Scientists have a hard time imagining how life anywhere could exist without one.
Take a deep breath. About 78 percent of the air you inhaled is the most abundant pure element found on Earth. Besides its role in the atmosphere, it’s used in all sorts of products: fertilizers, propellants, you name it. It's also an essential component of DNA and proteins. It’s called nitrogen.
In the last five years, volcanic eruptions in Iceland have disrupted air travel twice, triggering the cancellation of thousands of flights and causing billions of dollars of losses to airlines. But those geophysical flare-ups are brief whiffs compared with past eruptions on the island: Starting in June 1783, one of the largest lava flows in modern times spilled from a 27-kilometer-long volcanic fissure called Laki in southern Iceland.
Alt: A Visit to the Forgotten Volcano That Once Turned Europe Dark
Atmospheric physicists predict that global warming will not lead to an overall increasingly stormy atmosphere, a topic debated by scientists for decades. Instead, strong storms will become stronger while weak storms become weaker, and the cumulative result of the number of storms will remain unchanged.
Related: 'World can cut carbon emissions and live well'
Just as only the jester can tell the King the truth, satire performs a vital function in democratic society by using humor to broach taboo subjects, especially in times of crisis, according to a book by Penn State researchers.
If you have to make a complex decision, will you do a better job if you absorb yourself in, say, a crossword puzzle instead of ruminating about your options? The idea that unconscious thought is sometimes more powerful than conscious thought is attractive, and echoes ideas popularized by books such as writer Malcolm Gladwell’s best-selling Blink.
A woman's menstrual cycle may have an effect on her nicotine cravings, according to a recent study.
Some people seem better than others at fighting the flu, and you might suspect they were born that way. A new study of twins, however, suggests otherwise.
What did the humans enjoy drinking - and use to get merry - 9,000 years ago?
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