Did the Sun once take a wayward journey nearer to the galaxy's centre? Bas den Hond explores the possibility, and asks whether remote planet-like objects on the fringes of our Solar System hold the answer.
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It suggests one of the fundamental laws of physics, electomagnetism, is not constant throughout the universe and may change depending on where you are. 
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The newly discovered gas giant Kepler-16b, a Saturn-sized planet 200 light-years away .which like Star Wars’ Tatooine orbits two stars, has an orbiting moon that this planet might harbor ET life.
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Could the quantum vacuum of space act a bit like a metamaterial, creating a cosmic "superlens"? One physicist thinks so.
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Twenty years ago, astronomers discovered a number of enigmatic radio-emitting filaments concentrated near the center of the Milky Way Galaxy.
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The Fermi Space Telescope has detected 1,873 gamma ray sources in space, and nearly 600 are complete mysteries. Researchers are speculating on the nature of the mystery sources, including the possibility that they are made of dark matter.
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Microbes born on Earth are already pre-adapted for journeying through space, living in space, and not just surviving but flourishing in radioactive environments where they are continually exposed to radiation by ions similar to what might be...
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Cool stuff | First Orbit | I missed this a few months ago when it came out, but it's pretty neat: First Orbit, a film made in space following Yuri Gagarin's flight path as the first human...
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Sex in space might be a headline grabber, but should humans venture into the space between the stars, having sex will be the least of our concerns.
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NASA's Kepler space telescope is finding lots and lots of extrasolar planets. But how many might support intelligent life? And, is there a "sweet spot" in the galaxy where SETI astronomers should aim their telescopes?
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Could a form of metallic life may have evolved on a remote Milky Way exo-planet similar to the way organic life evolved on Earth? A Scottish research group is out to prove this is possible by creating reproducing and evolving...
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(PhysOrg.com) -- Theoretical physicists at the University of Bonn propose a new class of celestial bodies: “Dark Star Clusters”, consisting of many black holes and some stars orbiting around each other.
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The largest galaxies within the largest halos of dark matter also harbor the most massive black holes, which has led to speculation that exotic physics controls the growth of black holes and their link to massive dark matter halos.
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In the search for extraterrestrial intelligence, astronomers have hunted for radio signals and ultra-short laser pulses. Astronomers suggest a new technique for finding aliens: Look for their city lights.
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Dust that permeates the universe could be produced naturally by stars, and has a much more complex chemical makeup than was previously thought, according to a new study.
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Astronomy | exoplanet | Astronomers may have, for the first time, directly imaged a planet still in the process of formation, gathering material from a debris disk surrounding its par...
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Scientists are presenting the photo of a nearby star and its orbiting companion -- whose temperature is like a hot summer day in Arizona.
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The new book Psychology of Space Exploration examines the latest research into how the human psyche reacts to space travel. Recent experiments are encouraging. One that simulated a close-quarters tourist trip on a two-day orbit of the Earth found individuals exchanging phone numbers and agreeing to meet later for a reunion. Another experiment concludes that simply viewing Earth from space is "good for one's well being". A free electronic copy of the book is available from N.A.S.A.
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he European Space Agency has selected a satellite to fly scorchingly close to the sun and a probe to map the structure of the universe for launch in 2017 and 2019.
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The 100-Year Starship Study is collaboration between NASA and DARPA on the possibility and implications of someday sending a human being on a one-way space...
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A forward-thinking department in the Pentagon held a symposium last week to discuss problems posed by interstellar space travel. Among the topics discussed at the meeting convened by Defense Advanced Research Projects Agency (D.A.R.P.A.) was the problem of procreatin in space. "A trip to even one of the closest stars would take decades and possibly hundreds of years, likely spanning multiple generations. But scientists aren't even sure humans can procreate safely in the microgravity of space." Earth's gravity is necessary for healthy muscles, strong bones and good vision.
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Scientists at the Scientific Research Centre Bistra in Ptuj, Slovenia, have theorized that the Newtonian idea of time as an absolute quantity that flows on its own, along with the idea that time is the fourth dimension of spacetime, are...
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