How Common Are Potential Habitable Worlds In Our Galaxy?

Imagine this scenario: You are planning to buy a new house in a nice neighborhood. The schools in the area are good, the neighborhood is very safe, but you want to know the ‘kid friendly’ area (so that your kids can have friends). You drive around, looking at the available houses, watching for any ‘kid […]


Humans have gazed up at the sky in wonder since before the dawn of civilization, and the age-old question of “are we alone?” has occupied philosophers and priests for centuries on end. Today the interdisciplinary field of astrobiology strives toward an answer to this mystery by examining this history of life on Earth in an […]


Geologist, Astrobiologist, Engineer – NASA Ames Research Centre Research Scientist, Director – Blue Marble Space Institute of Science   Dr. Sanjoy Som is a research scientist at the Exobiology Branch of NASA Ames Research Center. His is also a systems engineer for Fruit Fly Lab, a scientific program to study fruit flies on the International […]

India joins an international initiative to build world’s largest and most sensitive radio telescope, the Square Kilometre Array (SKA)

Transmission of radio waves or optical light is the most plausible mechanism of communication between us and any intelligent civilization, if existent in the Milky Way. Search for ExtraTerrestrial Intelligence (SETI) is largely dependent on tapping the radio signals coming from other worlds which are several light years away from us. International community of scientists […]

Ice ages in the Southern Hemisphere are influenced primarily by sea surface temperature and atmospheric carbon dioxide rather than changes in the Earth’s orbit

A new international study casts doubt on the leading theory of what causes ice ages around the world — changes in the way the Earth orbits the sun. The researchers found that glacier movement in the Southern Hemisphere is influenced primarily by sea surface temperature and atmospheric carbon dioxide rather than changes in the Earth’s […]

Convergent evolution in land to sea transitions in marine predators across major mass extinctions

For more than 250 million years, four-limbed land animals known as tetrapods have repeatedly conquered the Earth’s oceans. These creatures–such as plesiosaurs, penguins and sea turtles–descended from separate groups of terrestrial vertebrates that convergently evolved to thrive in aquatic environments. In a new scientific review, a team of Smithsonian scientists synthesized decades of scientific discoveries […]