Could It Be Earth 2?

Not that sappy TV show from the 90’s, but rather a new planet that could be colonized in the case of an emergency….you know kinda like an asteroid that cannot be diverted…..since the Hubble went into orbit we have been finding new stars and new worlds…..one of the latest discoveries is promising….

From the UK’s Independent

An Earth-like planet has been discovered around the nearest star to our own Sun but astronomers have discounted the possibility of it harbouring life because its molten surface stews at about 1,500C.

The planet is the closest and smallest among about 800 “exoplanets” that scientists have identified beyond the Solar System since 1995 when they detected the first extra-solar planet.

Little is known about the newly discovered planet except that it has a mass similar to Earth and spins around the our nearest star system, Alpha Centauri, once every 3.2 days at a distance of 6 million kilometres (3.7m miles).

Alpha Centauri is the brightest star in the southern sky and is just 4.3 light years from Earth – it would still take 40,000 years to travel there with existing rocket technology. It is actually composed of three stars, Alpha Centauri A and B and a third, more distant star known as Proxima Centauri.

The relatively close proximity of the new planet to Alpha Centauri B means that the planet is closer to its own star than the distance between Mercury – the innermost planet in the Solar System – and the Sun. This means the planet is too hot for either liquid water or life, or at least life as we know it.

Astronomers discovered the planet using a technique that monitors subtle changes to the wavelength of light coming from a star. This “Doppler wobble” of the star can indicate whether its movements are affected by the gravitational pull of a nearby planet as it completes each orbit.

It was the same technique – and same team of astronomers – who discovered the first exoplanet in 1995, a giant gas planet similar to Jupiter orbiting the star 51 Peg. However, the “Doppler wobble” technique has since been refined to enable the astronomers to detect Earth-sized planets about 150 times smaller than the giant planet found around 51 Peg.

The Alpha Centauri B planet was found using the HARPS instrument attached to the European Southern Observatory’s telescope at La Silla in Chile, which measures tiny changes in the speed at which the star is moving towards or away from the Earth.

The instrument effectively monitors the gravitational pull on the star caused by the planet and can do so down to a velocity of about 1.8km per hour, which is about the same speed of a crawling baby.

We are finding these types of planets at an alarming rate….the problem, at least for now, is that we have NO way of getting there if the need should arise….maybe this will help the squints come up with some sort of propulsion other than the antiquated form we use now….

4 thoughts on “Could It Be Earth 2?

  1. This is an incredibly exciting time in our gaining a further understanding of our universe. With countless billions of suns and trillions of planets in our galaxy along, further multiplied by the billions of galaxies which exist, some being very much older than ours, who knows what we will discover in the coming tomorrows. I watch with great anticipation.

    1. Hi Dan and thanx for stopping by…..I agree….I have the Hubble site as my main page and I turned my granddaughter on to it she cannot get enough of this stuff…..I just hope that our scientist can break the travel restrictions in the coming decades…if not all we can do is watch from afar.

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