t1c40043219

@t1c40043219 (10)

France • Age 58

Joined myLot 17 years ago

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Comments (3)

t1c40043219's Comments

Planets like earth are rare or common?

orfeo77 @orfeo77 (220) • Italy 5 May 07

In the last years , we have discovered many planets outside our solar system.The grater part is giant gaseous.It is currently sometimes impossible to detect EartLike plantes around other stars.There are a lot of difficulty.What do...

2 responses •

1 person

t1c40043219 COROT works since 3 February 2007. It will study the interiors of nearby stars. It can detect planets by the transit method. The European Space Agency has another very interesting mission which is Darwin. It is still in development. It will carry...

13 May 07

Planets like earth are rare or common?

orfeo77 @orfeo77 (220) • Italy 5 May 07

In the last years , we have discovered many planets outside our solar system.The grater part is giant gaseous.It is currently sometimes impossible to detect EartLike plantes around other stars.There are a lot of difficulty.What do...

2 responses •

1 person

t1c40043219 There are three detection methods : - the radial velocity method - the astrometry method - the transit method The first method is the most commonly used. When a planet orbits around a star, the effect of the gravitation of the planet on the star causes...

12 May 07

Planets like earth are rare or common?

orfeo77 @orfeo77 (220) • Italy 5 May 07

In the last years , we have discovered many planets outside our solar system.The grater part is giant gaseous.It is currently sometimes impossible to detect EartLike plantes around other stars.There are a lot of difficulty.What do...

2 responses •

1 person

t1c40043219 A planet of 14 times the mass of the Earth was found in August 2004 at 49 light years around a star comparable to our Sun but very near to it so that it must be very hot on it. A planet of the same type was found in 2005 at 71.5 light years around a star a...

10 May 07