ESOblog - Where did all the Neptunes go?
ESO, European Organisation for Astronomical Research in the Southern Hemisphere
Source: eso.org
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ESO, European Organisation for Astronomical Research in the Southern Hemisphere
There's apparently a dearth of close-orbiting Neptune-size planets in our galaxy, and two observation techniques are starting to explain why.
All kinds of exoplanets orbit very close to their star
Two planets orbit the poles while another revolves around the star’s equator, suggesting a mysterious, undetected force.
Astronomers discovered that the exoplanets of a star in the constellation Pisces orbit in planes perpendicular to each other.