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Normal Star, Smallest New Planet
Topic: New Planets
01/26/06
Using an armada of telescopes, an international team of astronomers has found the smallest planet ever detected around a normal star outside our solar system.

ET: The Exoplanet Tracker
Topic: New Planets
01/12/06
Astronomers have discovered a planet orbiting a very young star nearly 100 light years away using a relatively small, publicly accessible telescope turbocharged with a new planet-finding instrument.

Triple Sunsets
Topic: New Planets
07/16/05
A NASA-funded astronomer has discovered a world where the sun sets over the horizon, followed by a second sun and then a third. The new planet, called HD 188753 Ab, is the first known to reside in a classic triple-star system.

A New Class of Planet?
Topic: New Planets
07/13/05
Last August, two groups of scientists announced the discovery of the smallest extrasolar planets found to date. But just what are these Neptune-size worlds? Are they gas giants, ice giants, or oversized Earths? Astronomer Alan Boss examines the possibilities.

The One-and-a-Half Percent Solution
Topic: New Planets
07/11/05
In the past decade, more than 130 extrasolar planets have been discovered. Almost all have been found using a technique that measures tiny changes in a star's radial velocity, the speed of its motion relative to Earth. Astronomer Alan Boss tells the story how the first of these discoveries came about.

The Barnard's Star Blunder
Topic: New Planets
07/06/05
The existence of extrasolar planets has become common knowledge in the past decade. But in the mid-20th Century, the search for worlds orbiting other stars got off to a rocky start. Alan Boss, an astronomer with the Carnegie Institution of Washington, recounts the early days of extrasolar planet-hunting.

New Planet, Largest Solid Core
Topic: New Planets
07/01/05
NASA researchers recently discovered the largest solid core ever found in an extrasolar planet, and their discovery confirms a planet formation theory.

Planetary Rubble No Trouble
Topic: New Planets
06/25/05
Interstellar travelers might want to detour around the star system TW Hydrae to avoid a messy planetary construction site. Astronomer David Wilner of the Harvard-Smithsonian Center for Astrophysics and his colleagues discovered the gaseous protoplanetary disk surrounding TW Hydrae holds vast swaths of pebbles.

Off-Center Optimism for a Planet
Topic: New Planets
06/23/05
A dust ring around the bright star Fomalhaut is off-center, suggesting a planet may be orbiting the star. Visible images taken by the Hubble Space Telescope show details of this dust ring staring back at us from space.

Elusive Earths
Topic: New Planets
06/22/05
What have scientists learned in a decade of searching for extrasolar planets? Are there other solar systems just like our own waiting to be discovered, or are our Sun and its contingent of planets in some way unique?

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