Scientists reported in the online scientific journal PLoS ONE that they've discovered fossils in the southern Utah desert of two new dinosaur species closely related to the Triceratops, including one with 15 horns on its large head.

The discovery of the new plant-eating species — including Kosmoceratops richardsoni, is considered the most ornate-headed dinosaur known to man. The other dinosaur, which has five horns and is the larger of the two, was dubbed Utahceratops gettyi.

For the first time, astronomers have “spotted” a planet that they believe exists in the Goldilocks Zone where liquid water could potentially exist on its surface. The planet is believed to be about three to five times the mass of the earth. It is thought to orbit the nearby star Gliese 581 every somewhere between 13 to 37 days at a distance about 1/6 that of the earth to our sun. Gliese 581 is a red dwarf star about 20 light years (or about 200 trillion kilometres) away from earth.

"It's the smallest, lightest planet known at this time," says Stéphane Udry from the Geneva Observatory in Switzerland. "And it's just at the right distance from its star for liquid water to possibly exist on its surface."

However, this does not mean that the planet is habitable or even very earth-like – it’s surface temperature is totally dependent on its atmosphere and we don’t know anything about its atmosphere, or even if it has one.

This planet has been found by the Doppler method: as it orbits the star, it tugs on it. This causes a shift in the wavelength of emitted light from the star.The mass of the planet, its distance from the star, and the shape of the orbit all determine how the light shifts, which is how astronomers have calculated the properties of this new planet.