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exoplanets

A cratered planet and its smaller moon appear silhouetted against a dark background.
Posted inNews

Marauding Moons Spell Disaster for Some Planets

Katherine Kornei, Science Writer by Katherine Kornei 6 March 20236 March 2023

In solar systems beyond our own, some moons might eventually collide with their host planets, new simulations suggest.

Artist’s illustration of a large yellow sphere with red curved lines running through it. A red striped sphere is in the foreground.
Posted inNews

“Hot Jupiter” Is in a Possible Death Spiral

Damond Benningfield, Science Writer by Damond Benningfield 31 January 202331 January 2023

Kepler’s first exoplanet is migrating toward its star, an evolved subgiant that is much bigger than first thought.

Posted inEditors' Highlights

Extremeness of Seasons Determined by Planetary Motion Parameters

by Bethany Ehlmann 7 November 20227 November 2022

We’ve long known that a planet’s orbital period and tilt determine length and intensity of seasons. We now see rotation rate matters too: max temperature shifts poleward as rotation slows.

An optical astronomy image shows hundreds of stars in shades of blue, white, yellow, and red, with a dark band of dust running horizontally across the image. The stars are a range of sizes, from bright blue spots to no more than pinpricks.
Posted inNews

Massive Stars May Commit Grand Theft Planet

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 23 September 202223 September 2022

New simulations show that planets around young, massive stars may have been captured or stolen rather than homegrown.

In this digital illustration, three small rocky planets orbit a pulsar. One planet is large in the foreground and has a polar aurora and cratered surface. The other two are smaller in the background. A pulsar appears at top left in the image and is depicted as a bright white point source emitting white beams at 5 o’clock and 11 o’clock. Purple and green loops and swirls surround the point of light and represent the strong magnetic field of a pulsar.
Posted inNews

Pulsar Planets Are Exceedingly Rare

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 16 August 202216 August 2022

A new survey of hundreds of pulsars could help solve the mystery of why planets exist around these dead stars.

A gif showing the five first images from JWST, split into six images that flash for 2 seconds each. In order they are: the first deep field, the spectrum of WASP-96B, Stephan’s Quintet, the Southern Ring Nebula in near-infrared light, the Southern Ring Nebula in midinfrared light, and the Carina Nebula. Further descriptions of each image can be found within the article.
Posted inNews

The First Look at Our New Astronomy Paradigm

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 12 July 202215 July 2022

Five galaxies, two nebulae, an exoplanet, and the early universe—JWST’s first images provide a cross section of the science yet to come.

A poof of red and yellow light shoots out of a dark red and black star
Posted inNews

Coronal Dimmings Shine Light on Stellar CMEs

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 6 June 202225 August 2022

Coronal mass ejections from stars have eluded easy observation, so scientists are looking at what’s left behind.

Image of AB Aurigae’s protoplanetary disk shows wispy spirals and a bright blobby protoplanet. A scale shows that the protoplanet’s orbit is about 3 times wider than Neptune’s orbit around the Sun.
Posted inNews

Giant Planet’s Formation Caught in Action

by Jure Japelj 11 April 202225 April 2022

Astronomers took a direct image of a massive protoplanet embedded in a protoplanetary disk. The system provides strong evidence for an as-yet-unconfirmed theory of planet formation.

An artist’s rendering of TOI-2180 b
Posted inNews

At-Home Astronomers Help Discover a New, Unique Exoplanet

by J. Besl 2 March 20222 March 2022

Amateur astronomers sifting through NASA’s public data uncovered a long-orbit gas giant that could help scientists understand how these planets form.

Illustration of an exoplanet in the foreground with other exoplanets and their host star in the distance
Posted inFeatures

Tidally Locked and Loaded with Questions

by Caroline Hasler 17 February 202217 February 2022

Tidally locked planets always present the same face to their host stars. What does this mean for their potential to support life?

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