Astronomers Discover 3 Super-Earths, 21 Light Years From Earth

Based off readings from NASA’s Spitzer space telescope, this super-Earth is about 1.6-times larger than our own planet, but has almost five-times the mass.

The extrasolar system which now has a name – HD 219134b – comprises three inner super-Earths, or exoplanets that are considerably larger than our planet but smaller than our solar system’s ice giants, and one outer gas giant. Judging by its density, it might be that it also has a composition similar to that of our planet. “Being able to characterize three transiting super-Earths in a single bright and close system would provide incomparable constraints for planet formation and composition models, in particular for super-Earths”, he said. The planet is 1.6 times the size of Earth, and whips around its star in just three days. And staying so close to your host star has some consequences.

Beside the constellation Cassiopeia, the circle indicates the location of HD219134.

Its mass is 4.5 times higher than Earth’s, and that it is1.

The temperature is on the surface is about 700 degrees’ Kelvin (427 Celsius, 800 Fahrenheit).

The lately found solution has at its core a pygmy stars professionally titled Human resource 8832 that’s brilliant a sufficient amount to be seen having the bare off but lighting control and less space-consuming than our sunshine.

However, HD219134b’s proximity to the star means that the planet is not capable of supporting liquid water, but could be reminiscent of Earth’s beginnings as a rocky volcanic world covered in flowing molten lava.

But HD219134b is exciting for another reason: it is the closest transiting planet known to scientists. It is by far the closest transiting planet known, and likely to remain one of the closest ever. “This one is practically a next-door neighbour”, said astronomer and study co-author Lars A. Buchhave of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts.

‘These transiting systems are especially interesting in that they allow characterisation of the atmosphere of the planet (by studying) the light of the star going through the atmosphere, ‘ Udry said.

Its founders stated that the fast transiting super-Earth is the closest planet to its host star they saw until today.

And the system is relatively near at a distance of 21 light years from Earth.

The fourth planet is a small-Saturn type world that orbits the star once every three years or so, they added. One of them weighs 2.7 times more than Earth. The team discovered three additional longer-period planets in the system from the HARPS-N radial velocities.