Exoplanets TOP STORY

Exoplanet HAT-P-26b Has A Primitive Atmosphere

© NASA

HAT-P-26b

A study combining observations from NASA's Hubble and Spitzer space telescopes reveals that the distant planet HAT-P-26b has a primitive atmosphere composed almost entirely of hydrogen and helium.


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Exoplanets

Brown Dwarf Is Actually a Planetary Mass Object

© NASA

SIMP J013656.5+093347

Sometimes a brown dwarf is actually a planet -- or planet-like anyway.

Exoplanets

NASA: Iceball Planet Discovered Through Microlensing

NASA: Iceball Planet Discovered Through Microlensing

Scientists have discovered a new planet with the mass of Earth, orbiting its star at the same distance that we orbit our sun.


Exoplanets

Spring Cleaning in an Infant Star System

Spring Cleaning in an Infant Star System

This image depicts the dusty disc encircling the young, isolated star HD 169142.


Exoplanets

Fledgling Stars Try to Prevent Neighbors from Birthing Planets

Fledgling Stars Try to Prevent Neighbors from Birthing Planets

Newly formed stars are surrounded by a disc of dense gas and dust. This is called the protoplanetary disc, as material sticks together within it to form planets.


Exoplanets

Visualizing Debris Disks to Understand Planetary System Evolution

Visualizing Debris Disks to Understand Planetary System Evolution

When planets first begin to form, the aftermath of the process leaves a ring of rocky and icy material that's rotating and colliding around the young central star like a celestial roller derby.


Exoplanets

Astronomers Discover a Missing Link in Planet Formation

Astronomers Discover a Missing Link in Planet Formation

Planets are thought to form in the disks of dust and gas found around young stars. But astronomers have struggled to assemble a complete theory of their origin that explains how the initial dust develops into planetary systems.


Exoplanets

Studying TRAPPIST-1 With James Webb Space Telescope

Studying TRAPPIST-1 With James Webb Space Telescope

With the discovery of seven earth-sized planets around the TRAPPIST-1 star 40 light years away, astronomers are looking to the upcoming James Webb Space Telescope to help us find out if any of these planets could possibly support life.


Exoplanets

Nearby Star Has 7 Earth-Sized Worlds - Most In Habitable Zone

Nearby Star Has 7 Earth-Sized Worlds - Most In Habitable Zone

It will be announced tomorrow by NASA that Michael Gillon et al have confirmed 4 more Earth-sized planets circling TRAPPIST-1 in addition to 3 already discovered.


Exoplanets

Winds of Rubies and Sapphires On HAT-P-7b

Winds of Rubies and Sapphires On HAT-P-7b

Signs of powerful changing winds have been detected on a planet 16 times larger than Earth, over 1000 light years away - the first time ever that weather systems have been found on a gas giant outside our solar system - according to new research by the University of Warwick.


Exoplanets

Sculpting Solar Systems

Sculpting Solar Systems

Three teams of astronomers have made use of SPHERE, an advanced exoplanet-hunting instrument on the Very Large Telescope at ESO's Paranal Observatory, in order to shed light on the enigmatic evolution of fledgling planetary systems.


Exoplanets

ALMA Spots Possible Formation Site of Icy Giant Planet

ALMA Spots Possible Formation Site of Icy Giant Planet

Astronomers have found signs of a growing planet around TW Hydra, a nearby young star, using the Atacama Large Millimeter/submillimeter Array (ALMA).


Exoplanets

NASA - Hubble Finds Planet Orbiting Pair of Stars

NASA - Hubble Finds Planet Orbiting Pair of Stars Video in Story

Two's company, but three might not always be a crowd -- at least in space. Astronomers using NASA's Hubble Space Telescope, and a trick of nature, have confirmed the existence of a planet orbiting two stars in the system OGLE-2007-BLG-349, located 8,000 light-years away towards the center of our galaxy.


Exoplanets

Stellar Activity Can Mimic Misaligned Exoplanets

Stellar Activity Can Mimic Misaligned Exoplanets

The occultation of stellar active regions during the planetary transit[1] can lead to inaccurate estimates of the characteristics of these exoplanets, especially the spin-orbit tilt angle.


Exoplanets

Twin Stars Hosting Three Giant Exoplanets

Twin Stars Hosting Three Giant Exoplanets

A team of Carnegie scientists has discovered three giant planets in a binary star system composed of stellar ''twins'' that are also effectively siblings of our Sun. One star hosts two planets and the other hosts the third.


Exoplanets

Solar Obliquity Induced by Planet Nine

Solar Obliquity Induced by Planet Nine

The six-degree obliquity of the sun suggests that either an asymmetry was present in the solar system's formation environment, or an external torque has misaligned the angular momentum vectors of the sun and the planets.



More top stories from February.