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The Best Sci-Fi Time Machines Ever

The time machine in “Dr. Who” is called the TARDIS, which stands for Time and Relative Dimensions in Space.Credit: BBCAmerica Whether you prefer phone booths, cars or wearable devices, surely there is a time machine out there for you. We’ve gathered some of the top time machines from science fiction, in all their wibbily wobbly […]

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Comet's Close Encounter with Mars Dumped Tons of Dust on Red Planet

On Oct. 19, 2014, the Comet Siding Spring made a close flyby of Mars. This composite photo combines separate observations of the comet and Mars by the Hubble Space Telescope to illustrate the encounter, with the Mars image adjusted to show planet details.Credit: NASA, ESA, J.-Y. Li (PSI), C.M. Lisse (JHU/APL), and the Hubble Heritage […]

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Chasing Wormholes: The Hunt for Tunnels in Space-Time

Science fiction literature is full of stories in which tunnels in space-time — known as wormholes — are used for time travel. How much fact lies within the fiction? The answer is, more than you might think. Scientists are looking at ways to use traversable wormholes (if they exist) to travel faster than the speed […]

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Has the Kepler Space Telescope Discovered an Alien Megastructure?

The artist’s concept shows NASA’s planet-hunting Kepler spacecraft operating in a new mission profile called K2.Credit: NASA Ames/JPL-Caltech/T Pyle NASA’s Kepler Space Telescope is tasked with finding small, rocky worlds orbiting distant stars. However, exoplanets aren’t the only thing Kepler can detect — stellar flares, star spots and dusty planetary rings can also pop up […]

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If Aliens Exist, Would They Have Sex?

Humans love to ponder whether alien life is out there, and what it might look like. So here’s a burning question: Would extraterrestrials have sex? The question isn’t entirely prurient. The evolution of sex  is a tricky subject. Sexual reproduction is costly. It requires finding a mate, convincing that mate to mingle DNA with you, and […]

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20 Years On, Future Bright for Exoplanet Science

This year we celebrate the discovery of 51 Pegasi b in October, 1995. This giant planet is about half the size of Jupiter and orbits its star in about four days. ’51 Peg’ helped launch a whole new field of exploration.Credit: NASA/JPL-Caltech Humanity’s understanding of its place in the universe began changing in a big […]

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How Do You Spot an Alien Planet from Earth? (Infographic)

By Karl Tate, Infographics Artist   |   October 15, 2015 07:00am ET Detecting tiny planets amid a star’s glare, from many light-years across the galaxy, is very challenging. Direct imaging, or resolving planets as pixels in a photograph, is only possible today for large, Jupiter-class and above, planets.  7 Ways to Discover Alien Planets Here are […]

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Planet Hunter Geoff Marcy Resigns Following Sexual Harassment Investigation

Famed planet hunter Geoff Marcy has resigned from his position at the University of California, Berkeley in the aftermath of a sexual harassment investigation.Credit: NASA Geoff Marcy, a leader in the field of exoplanet research, has resigned from his position as a professor of astronomy at the University of California, Berkeley, following an investigation that […]

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Space, astronomy and science