Archive for the ‘Milky Way’ Tag

Kelper Mission Discovers Twin Earth! (Updated 28th April 2012)   31 comments

 

Gliese 667C – Kelper Mission Discovers Twin Earth!

Billions of potentially habitable alien planets in the Milky Way Smile

Double sunset from Gliese 667C

(Alien Landscape: Artists impression of sunset scene from the Super Earth orbiting the star Gliese 667C (GJ 667C) which is part of the triple star system. The two more distant stars Gliese 667A and Gliese 667B appear in the sky to the right of the image. Astronomers estimate there of tens of billions of small, rocky habitable worlds, in the Milky Way orbiting faint red dwarf stars within their ‘habitable zones,’ where surface water could support life, and dozens within 30 Light Years of Earth. Image Credit: L.Calgada/ESO)

“This was expected to be a rather unlikely star to host planets. Yet there they are very nearby, metal-poor examples of the most common type of star in our galaxy. The detection of this planet and so nearby, and this soon implies that our galaxy must be teeming with billions of potentially habitable rocky planets.” ~ Steven Vogt

Super-Earth Gliese 667C (GJ 667C)

GJ 667C is an M class red dwarf star in a triple star system. The alien ‘super-Earth’ is situated about 22 Light Years away where it is orbiting it’s red dwarf host star in a period of 28 days, and is about 4.5 times larger than Earth. It is temperate enough to allow liquid water to exist on its surface. It is accompanied by orange K class dwarf stars GJ 667A and B.

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GJ 667C receives 90% of light received by Earth, most of which is infra-red, so a higher percentage of incoming energy is absorbed by the planet.

Well worth checking out! Though given the distance it is not likely to be in our lifetime, unless warp speed becomes a reality anytime soon!

“This planet is the best candidate to support liquid water and perhaps life as we know it…”

~ Guillem Anglada-Escude

Artists impression of Super-Earth

About 80% of the Milky Way (160 billion) stars are red dwarfs so it is likely that there are around 65 billion stars with habitable Super Earth’s in our galaxy. About 100 lie within 10 parsecs (32.6 Light Years) of Earth.

“Because red dwarfs are so common – there are about 160 million of them in the Milky Way – this leads us to the astonishing result that there are tens of billions of these planets in our galaxy alone.”~ Dr Xavier Bonfils from Grenoble University in France, who led the international team.

Star spectral classes comparison

THE STUDY – Between February 2008 and April 2009 researchers at the European Southern Observatory, La Sill Observatory in Chile, studied 102 Class M (Red Dwarf) stars situated at a distance of less than 32.6 Light Years away. New planets, new life?New planets are discovered by detecting the subtle wobbles that occur when the planets are orbiting their star. 41% of them are orbiting their stars inside the habitable zone, where they could potentially support life.

GJ 667C was discovered by Astronomers from UC Santa Cruz, Steven Vogt and Eugenio Rivera, led by Guillem Anglada-Escude and Paul Butler of Carniegie Institution for Science.

The HARPS high-precision ‘Planet Hunter’ device works with the 3.6m telescope at the Silla Observatory in Chile to bring us these results.

When the information obtained via a telescope was input into the instruments nine super-Earth planets were detected by astronomers. These included Gliese (GJ) 581 and Gliese(GJ) 667C both of which are within the habitable zones of their stars.

clip_image012However, it should also be remembered that Red dwarf stars are not as super-hot as our star – The Sun. Consequently the super-Earth planets that orbit them must Flares from alien sundo so at a considerably closer range in order to obtain the necessary heat. With their habitable zones in such close proximity to their stars compared to the distance of Earth to the Sun there is a danger that the potential for life could be inhibited by the dangerous X-ray and ultraviolet flares emitted by their stars, which could successfully frazzle any life!

NEWS UPDATE: REPORTS CONFIRM EXISTENCE OF HABITABLE EXO-PLANET! (28TH APRIL 2012)

After re-evaluating information collected back in February, scientists reportedly confirmed on Friday that they had indeed discovered a planet outside of our solar system that is capable of supporting life.

On Friday, the Telegraph published a report confirming the findings.

“Re-analyzing data from the European Southern Observatory, the astronomers found Gliese 667Cc is a solid planet with roughly four and a half times the mass of Earth,” they said, adding that astronomers from the University of Göttingen and the University of California “have calculated the planet receives ten per cent less light from its red dwarf star than the Earth gets from the Sun.”

“It’s the Holy Grail of exo-planet research to find a planet orbiting around a star at the right distance so it’s not too close where it would lose all its water and not too far where it would freeze,” University of California astronomer Steven Vogt said, according to the UK publication. “It’s right there in the habitable zone — there’s no question or discussion about it. It is not on the edge. It is right in there.”

(Source: redOrbit)

 

The Kepler Mission, NASA Discovery mission #10–Kelper-16B   23 comments

Planet Hunting Spacecraft – Search for habitable planets

WHERE THE SUN SETS TWICE-PLANET KELPER-16B

-In the Light to Two Suns

 

double sunset

NASA’s Kepler mission has discovered a world where two suns set over the horizon instead of just one.

The existence of a world with a double sunset has, until now, been “the stuff of science fiction” confined to sci-fi movies such as Star Wars.

Over three decades later a world with double suns is now a scientific fact.

 

 

The new planet “Kepler-16b” is located 200 light-years from Earth, and like Tatooine, the home world of Star Wars Luke Skywalker, is a circumbinary planet – a planet which orbits two stars.

StarWars-Planet TatooineLuke SkywalkerTatooines Two Suns

A cold and inhospitable world similar in size to Saturn, KELPER-16B is thought to consist of about 50 percent rock and 50 percent gas. A gas giant like Jupiter in the Earth’s system rather than another terrestrial type world. Much too cold for life. The parent stars are smaller than our sun. One is 69 percent the mass of the sun and the other only 20 percent. KELPER-16B orbits around both stars every 229 days, similar to Venus’ 225-day orbit, but lies outside the system’s habitable zone, where liquid water could exist on the surface, because the stars are cooler than our sun.

                   In the Light of Two Suns_Kelper-16BKelper-16B orbiting two starsWhere the Sun Sets Twice_Kelper-16B

Researchers in Austin, Texas have been busy calculating the likelihood of Earth-like planets existing around twin stars. Worlds with two suns.

The existence of Earth-like worlds in the habitable zones around binary systems is now thought possible by astrophysicists from the University of Texas at Arlington. These regions are the right temperature to support liquid water on its surface, as in oceans and seas, and therefore life, in a form familiar to us.

Extrasolar-Moon: CREDIT: David A. Aguilar

 

Using the Kepler-16 double sun system as a basis and beginning point it has been established that as with our own the habitable zone of this system is centered mostly on the system’s primary star and extends in a region around it equal to 0.36 to 0.71 the distance of the Earth to the sun. A roughly similar distance as that between Earth and neighboring planet Venus, out to about the distance of red planetary neighbor Mars.

One possibility the researchers have also explored the possiblility that a planet the size of Earth could be orbiting beyond the twin star system which would put it ouside the area considered the habitable zone. An area known as the extended region.

There have not been any "exomoons" found so far but the planned Space Telescope – the James Webb, will have the necessary facilities to study the atmosphere of an alien exomoon, detecting and analysing vital gases for example carbon dioxide and oxygen.

The Kelper Space Telescope has so far discovered:

  • 21 confirmed planets
  • 1235 Planetary Candidates
  • 2165 Eclipsing Binary Stars

        And this is only the beginning!!!!!

Mythology of the Stars   22 comments

Interstellar Mythology…Star Myths

The stars, remote but also familiar, have been a source of fascination us throughout history and are an integral part of many myths and legends. Early references to the Greek constellations mythological significance are found in the works of Homer, dating back to around the 7th century B.C

                          deep_sky_big_dipper

“Children of the sun and moon” is the way The Paiute of North America refer to the stars. They consider the sun loves to eat his children, based on the stars disappearing at sunrise. They say the moon, is the mother of the stars, who dances happily across the sky with them. To the Yakut of Siberia, see the stars as crystal windows giving the gods opportunity to look upon earth. The Turko-Tatar, tent-dwellers of Central Asia view the sky as a large tent covering earth, and the stars tiny holes in it.

Myths of the Milky Way.

The Milky Way, the faint band of light visible in the sky on clear dark nights, runs along the line of the galactic equator, marking the centre of the galaxy to which our solar system belongs. It consists of a combination of the light of a vast array of stars, and in areas clouds of obscuring interstellar gas and dust. 

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One Peruvian tradition, believes the Vilcanota River is a reflection of the Milky Way and water constantly circulates back and forth between the river and the heavens. In the minds of The Navajo the Milky Way was created by “Coyote” a con artist who using a blanket threw and scattered in a huge arc, in the sky, an array of sparkling stone chips to form a pathway between heaven and earth.

           Vilcanota_Rivernavajo xibalba

The Maya considered the Milky Way to be the road to Xibalba, the underworld. Native Americans believed the Milky Way was the path the souls of the dead walked. According to the Southern African Zulu and Ndebeles the stars are the ancestor’s eyes, watching over them.

Constellations and Individual Stars in Myths.

 By the 5th century B.C., most of the constellations were connected to myths, “At this stage, the fusion between astronomy and mythology is so complete that no further distinction is made between them” (the Catasterismi of Eratosthenes)

In Chinese mythology gods such as the god of literature and the god of long life, were connected with the stars.

                                                god of literature god of longlife

In Greek mythology Pleiades were the seven daughters of the Titan, Atlas and the ocean nymph Pleione. Zeus placed them in the sky to protect them from Orion the hunter. But Orion became a constellation and continued to chase the Pleiades across the heavens. The Inuit of northern Greenland considered Orion a series of steps in a great bank of snow linking earth and heaven.

                                         pleiadesatlas

Mythology, influenced the naming of many objects in the night sky, including planets. Their Roman mythological name reflected their characteristics

In Norse mythology Venus was originally the toe of the hero Aurvandil. Thor carried Aurvandil out of Giantland across the river Elivagar. En-route, one of Aurvandil’s toes froze, so breaking it off Thor threw it into the sky. To the Greeks, Venus was Hesperus, grandfather of the goddesses called Hesperides. She who guarded the golden apples of eternal life on western sea

            Surface_of_VenusThor planet-venus

Even the names of the Galilean moons of Jupiter (the four largest). Io, Europa, Ganymede, and Callisto were all desired–and taken by force–by Jupiter. Ironically the mythological women the king of the gods so fervently pursued now revolve around him.

          jupiter-moons-1Jupiter_and_moonsGalilean_moons

**(Credit for this blog post topic and also previous one: “Androgoth Prince of Goths”)

Thank you for the subject suggestions Androgoth Smile