Why is our Moon so massive compared with Earth, and how might that configuration happen elsewhere?
exoplanets
Five Reasons Geoscience Should Care About Astronomy’s New Road Map
The latest road map to U.S. astronomy’s next decade recommends a smaller space telescope, ground-based facilities, and an institutional effort to create an inclusive and equitable field.
Where Moons Are Made
The young, growing planet PDS 70 c has enough material swirling around it to make at least three Moon-sized moons.
Peculiar Planets Prefer Perpendicular Paths
Some exoplanets orbit their stars from pole to pole instead of across the equator. Why do they do that?
Oddballs of the Exoplanet Realm
The list of planets in other star systems includes zombies, hot giants, puffballs, and even a few Tatooines. Zowie!
Unveiling the Next Exoplanet Act
In August, Eos looks at what the first round of observations with the James Webb Space Telescope might reveal about faraway worlds.
Exoplanets in the Shadows
The bright clutter of individual discoveries can overshadow some fascinating research, from necroplanetology to rogue planets to the intimacy of alphanumeric nomenclature.
Overture to Exoplanets
The curtain is about to rise on the James Webb Space Telescope. Let’s see what’s in store for its opening act.
The Forecast for Exoplanets is Cloudy but Bright
Clouds make climate modeling on Earth difficult. Identifying—and even defining—atmospheric phenomena on other planets is the next big exoplanet challenge.
Thousands of Stars View Earth as a Transiting Exoplanet
Researchers have identified more than 2,000 stars whose past, present, or future vantage points afford a view of Earth passing directly in front of the Sun, a geometry useful for pinpointing planets.