Planet Nine, if it exists, is somewhere between 6-10 times the mass of Earth, and it may have an orbit that takes it around the sun once every 1,500 Earth years or more.
Rediff.com takes you on a scintillating voyage to the outer space
Track and field star Lolo Jones is the most high-profile crossover athlete to try her hand at winter sports since former NFL running back Herschel Walker took off his shoulder pads and climbed into a bobsled.
Planetary scientists claim they have finally solved a 14-year mystery by discovering the source of the water in Saturn's upper atmosphere. =
New Zealand, who won the toss and chose to bat, lurched to 187-8 before bad light ended play three overs after tea.
Celestial views of the Milky Way, Northern Lights, and comets hurtling through space are just some of the incredible images to have made the shortlist for the 2015 Insight Astronomy Photographer of the Year competition.
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