Searching for New Earths

National Geographic ^ | 12/02/09

[KevinDavis]

Our New Home

[KevinDavis]

For other space news go to: http://www.spacetoday.net
For a list of Private Space Companies: http://en.wikipedia.org/wiki/List_of_private_spaceflight_companies

[cripplecreek]

I just wish these writers wouldn’t use the term “New Earth” or “Earthlike”. Science is taking a beating because of the climate scam and people read a title like that then find that the article mentions anything but earthlike planets and the scientists get the blame.

According to planetquest the number of planets found stands at 403 and the number of eartlike planets is listed at 0.

[ilovesarah2012]

Amazing that we still seem to be unique. God made us special.

[cripplecreek]

We’ll always be unique even if we find other planets with life. Personally I’m not thrilled with the idea of finding intelligent life. I’m far more interested in finding life we can eat, water we can drink, and air we can breathe.

[discomatic]

Caprica and Kobol were earthlike planets.

[ErnstStavroBlofeld]

The reason why Earth planets have not been discovered is because they are tiny. The parent star blots them out. Traditional methods of exoplanet detection all rely on indirect means of inferring the existence of orbiting bodies. These methods include:
1.astrometry - watching a star move slightly due to the gravitational influence of a nearby planet
2.Observing doppler shifts of the stars spectrum due to the star's movement
3.Observing the amount of light from a star change as an extrasolar planet transits the star, preventing a portion of the light from reaching the observer.
4.Pulsar timing
5.Gravitational microlensing
6.Observing radiation from Circumstellar disks in the infrared.
The Kepler Mission, is a NASA mission which is able to detect extrasolar planetsThe NASA Kepler Mission uses the transit method to scan a hundred thousand stars in the constellation Cygnus for planets. Kepler will be sensitive enough to detect planets even smaller than Earth. By scanning a hundred thousand stars simultaneously, it will not only be able to detect Earth-sized planets, it will be able to collect statistics on the numbers of such planets around sunlike stars

[cripplecreek]

I understand all that, I’m just more concerned with the credibility of the scientists with the word “Earthlike” being thrown around.

[Psycho_Bunny]

“the universe is not only queerer than we suppose, but queerer than we can suppose.”

What a widely unimpressive and mundane statement.

[ErnstStavroBlofeld]

I am very confident. NASA/Kepler and the data it sends back will make this a reality.

[ErnstStavroBlofeld]

The transit method that Kepler telescope uses also makes it possible to study the atmosphere of the transiting planet. When the planet transits the star, light from the star passes through the upper atmosphere of the planet. By studying the high-resolution stellar spectrum carefully, one can detect elements present in the planet’s atmosphere. A planetary atmosphere (and planet for that matter) could also be detected by measuring the polarisation of the starlight as it passed through or is reflected off the planet’s atmosphere.

[cripplecreek]

I hope so as well. With a little luck it will inspire us to try harder.

I don’t know if Kepler will look at Alpha Centauri but I’ve read some scientists theorize that its a prime candidate for small rocky planets.

[ErnstStavroBlofeld]

I think that Alpha Centuri, Tau Cei, and Zeta Reticuli are prime candidates.

[cripplecreek]

The closer the better. Maybe we’ll see some real propulsion research that will put the Alpha Centauri system with in decades rather than thousands of decades. Even 1/8 or 1/16 light speed would put it within reasonable reach.

[ErnstStavroBlofeld]

I agree. Maybe through the use of wormholes. Though, I prefer use wormholes to travel interdimensionally.

[frposty]

Hate to say it, but that National Geographic article was 90% pablum. The magazine is overproduced — pictures too beautiful and writing too slick. It acts like it’s a great magazine. It’s stuck on itself. Also it shoves a lot of environmental stuff at us.

[ilovesarah2012]

And that was before Prop 8!

[Brett66]

It’s probably the reporters assigning these names to these exoplanets, but scientists and reporters should be more careful with the terms they use.

If it’s a rocky world at 2,000 degrees Fahrenheit, that ain’t “Earthlike”

[frposty]

One more thing about National Geographic. Let’s see when they report on climategate, or even report that new analysis of the data shows reduced evidence of a warming trend.

[cripplecreek]

Exactly.

Some of the large gas giants they’ve found are in the habitable zone which makes me wish we could get an idea about moons they may have around them.

Have you seen the interactive atlas planetquest has now? Its the 3-D new worlds atlas and its pretty cool. It shows where the star is in relation to us and you can zoom in on their planetary systems and get other info.

http://planetquest.jpl.nasa.gov/atlas/atlas_index.cfm