ChevScience

A weblog of popular science

Archive for the ‘Main Sequence’ Category

Nine-Planet Star System Discovered

Posted by ChevScience on June 1, 2012

A star about 127 light-years from Earth may have even more planets than the sun, which would make the planetary system the most populated yet found.

According to a new study, HD 10180—a sunlike star in the southern constellation Hydrus—may have as many as nine orbiting planets, besting the eight official planets in our solar system.

The star first made headlines in 2010 with the announcement of five confirmed planets and two more planetary candidates.

Now, reanalysis of nearly a decade’s worth of data has not only confirmed the existence of the two possible planets but also uncovered the telltale signals of two additional planets possibly circling the star, bringing the total to nine. Learn more here.

Posted in Main Sequence, Popular Science | Leave a Comment »

Billions of Earth-Like Planets May Exist in Our Galaxy

Posted by ChevScience on June 1, 2012

About 40 percent of red dwarf stars may have Earth-sized planets orbiting them that have the right conditions for life, that is, their surface water would be liquid.

Red dwarfs – which are smaller and cooler than our sun – are extremely common, making up 80 percent of stars in the galaxy. Considering that about 80%, or 160 billion, of the Milky Way’s stars are red dwarfs, there are likely more than 65 billion stars in our galaxy with a habitable super-Earth and about 100 of them lie within 10 parsecs, or 32.6 light-years, of Earth. Learn more here or here.

Posted in Main Sequence, Pre-main sequence | Leave a Comment »

Picture shows how little water there is on Earth

Posted by ChevScience on May 15, 2012

Here is a picture that gives you a perfect idea of how much water there is on Earth compared to the solid materials that form its main body. It’s truly staggering.

This picture shows the size of a sphere that would contain all of Earth’s water in comparison to the size of the Earth. The blue sphere sitting on the United States has a diameter of about 1,385 kilometres, with a volume of about 1,386,000,000 cubic kilometres. The sphere includes all the water in the oceans, seas, ice caps, lakes and rivers as well as groundwater, atmospheric water, and even the water in you, your dog, and your tomato plant. Learn more here.

Posted in Environment, Main Sequence | Leave a Comment »

Earth-like planets around Alpha Centauri?

Posted by ChevScience on May 11, 2012

Alpha Centauri, the closest star system to our Solar System, should harbour detectable Earth-like planets, according to a new study by astronomers at the University of Santa Cruz

I love this type of research. I look up at the Southern Cross often, at this star! it just could have some one looking back at me.For Real!

Read on

Posted in Main Sequence, Planetart nebulae/white dwarfs | Leave a Comment »

Baby Stars Born to ‘Napping’ Parents

Posted by ChevScience on June 16, 2011

ScienceDaily (Mar. 9, 2011) — Cardiff University astronomers believe that a young star’s long “napping” could trigger the formation of a second generation of smaller stars and planets orbiting around it.

read on

Posted in Astrophysics, Main Sequence | Leave a Comment »