If our Galaxy truly contains many intelligent civilizations, some of which may be ahead of us by a billion years, how is it possible that we have not seen any sign of them yet? Nobody knows the answer to this so-called "Fermi Paradox," but..
Spectacular new Hubble Space Telescope images reveal 250 previously unknown galaxies that formed just 600 million years after the Big Bang.
Humans may feel small when contemplating the universe, but astronomers are closer than ever to at least making us feel a little less lonely thanks to a new method of measuring planetary habitability and advances in telescope technology.
The James Webb Space Telescope (JWST), as the largest space-based astronomical observatory with near- and mid-infrared instrumentation, will elucidate many mysterious aspects of comets.
Some 300 hot Jupiters have been identified over the past two decades, and this is the first time any close-in planets were discovered.
The new field of exoplanet science has progressed rapidly in the last two decades: Astronomers have now confirmed the existence of nearly 2,000 planets beyond our own solar system.
Astronomers at the University of Maryland, observed the event, which is the closest tidal disruption discovered in about a decade.
For decades, Alan Stern talked about how important it was to send a spacecraft to Pluto. Those speeches, given to any audience willing to lend an ear, helped build up support for a mission to what was once classified the ninth planet, maintain support once NASA agreed to fly a mission after previous efforts foundered, and to retain interest once New Horizons was on its long cruise to Pluto.
Dr Amitabha Ghosh, who has worked in multiple Mars missions of National Aeronautics and Space Administration (Nasa) since the US launched the Mars Pathfinder spacecraft in 1996, believes that one day space travel will become "affordable".
Five possible space missions have been selected by NASA to receive preliminary funding, ahead of a possible launch as early as 2020. Each of the projects, chosen as part of NASA
As NASA seeks to reduce costs and extend the length and capabilities of ambitious new solar system science and exploration missions, alternative propulsion technologies may deliver the right mix of savings, safety and superior propulsive power to enrich a variety of next-generation journeys to worlds and destinations beyond Earth orbit.
Scientists are developing a mission concept that would send a probe flying through the plume created by the 100-odd geysers erupting from the south polar region of Saturn
In January 2002, astronomers discovered a massive explosion coming from V838 Monocerotis. They initially thought they were witnessing a supernova, but after the initial flash of light began to dim (as expected), it began to brighten again in infrared wavelengths at the beginning of March. After that brightening faded, another one happened in April.
Dr. Harold "Sonny" White, the Advanced Propulsion Theme Lead for the NASA Engineering Directorate has said that "a Star Trek experience within our lifetime is not such a remote possibility."
A record-breaking star system has been discovered, playing host to nine alien worlds -- including three "super-Earths."
