81–100 of 301 results
TESS launch

Exoplanets

Successful Launch for NASA’s TESS Exoplanet Mission

The Transiting Exoplanet Survey Satellite (TESS) launched successfully on April 18th at 6:51 p.m. EDT aboard a SpaceX Falcon 9 rocket to survey the entire sky for new worlds.

ARIEL Mission

Exoplanets

ARIEL: Next-Decade Exoplanet Mission Selected

The European Space Agency's ARIEL mission will seek to analyze the atmospheric composition and true nature of distant worlds.

Exoplanets

The Fate of Exomoons when Planets Scatter

Planet interactions are thought to be common as solar systems are first forming and settling down. A new study suggests that these close encounters could have a significant impact on the moons of giant exoplanets — and they may generate a large population of free-floating exomoons.

Exoplanets

An Eccentric Planet Skims a Giant Star

As part of a major survey of evolved stars, scientists have discovered the most eccentric planet known to orbit a giant. What can we learn from this unusual object before it’s eventually consumed by its host?

TRAPPIST-1 system

Exoplanets

A Closer Look at the Worlds of TRAPPIST-1

Two new studies of the seven planets orbiting TRAPPIST-1 shed light on how these worlds formed and what they look like now.

Brown dwarf

Exoplanets

A New Definition for the Biggest Planets?

Scientists now understand where large planets stop and small brown dwarfs begin — a discovery that redefines the word “planet.”

Robo-AO

Exoplanets

Extra Stars Might Downsize Exoplanets

Follow-up studies of candidates planetary systems found by NASA’s Kepler mission suggest that companion stars make some worlds appear smaller than they really are.

Stellar Science

Ringed Disks Don’t Always Mean Planets

Astronomers presenting at the winter American Astronomical Society meeting caution that the features often pointed to as evidence of growing natal planets could form on their own.

Exoplanets

Metal-rich Stars Host Closer Planets

Iron-rich stars host planets on closer orbits than their iron-poor siblings, astronomers find. The results could help reveal how planets form.

Exoplanets

More Planets in the Hyades Cluster

A few weeks ago, Astrobites reported on a Neptune-sized planet discovered orbiting a star in the Hyades cluster. A separate study submitted at the same time, however, reveals that there may be even more planets lurking in this system.

star on a scale

Exoplanets

60-Second Astronomy News: Dec. 20, 2017

This week's roundup of astro news brings us a polar-orbiting planet, a novel way to measure stellar masses, and ginormous convective bubbles on a distant star.

Kepler-90 system

Exoplanets

Neural Network Finds 8-Planet System

Scientists have applied a brand of artificial intelligence to data from the exoplanet-hunting Kepler satellite, resulting in the discovery of the first eight-planet system outside our own.

55 Cancri e, artist's concept

Exoplanets

Atmosphere, Not Lava Flows, for Exoplanet 55 Cancri e

Previous studies of 55 Cancri e haven’t been able to determine whether this super-Earth hosts an atmosphere. A new study settles the question.

Temperate exoplanet 11 light-years away

Exoplanets

Planet Orbits Quiet Star 11 Light-years Away

Astronomers have discovered a potentially rocky planet around a red dwarf star just 11 light-years away.

Exoplanets

Cool Dust — and More Planets? — for Proxima Centauri

Tantalizing new observations hint that there's a lot more going on in the Proxima Centauri system — the one that hosts the exoplanet nearest Earth — than meets the eye.

WASP-12b

Exoplanets

Puffed-Up Hot Jupiter Is Surprisingly Dark

Researchers have found that a football-shaped, ultra-hot gas giant that’s being devoured by its host star is also one of the least reflective exoplanets ever found.

Exoplanets

An Atmosphere of Heavy Metals

Researchers have found strong evidence of titanium oxide in the atmosphere of a hot giant planet, adding new insights to the complex motions of these planets’ extreme atmospheres.

Tau Ceti system

Exoplanets

Four Exoplanets Might Orbit Sun-like Star

Astronomers have used an innovative technique to discover four super-Earth-size planet candidates orbiting Tau Ceti, a Sun-like star 12 light-years away.

Saturn's moons

Exoplanets

Best Exomoon Candidate Yet?

Astronomers have found one of the best exomoon candidates in data collected by the Kepler spacecraft.

TRAPPIST-1

Exoplanets

New Age Estimate for TRAPPIST-1

A new study suggests that the seven-planet dwarf star could be much older than the Sun.

Advertisement
Advertisement
Advertisement
Advertisement