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orbits & rotations

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.

Diagram showing the interior of the Sun
Posted inFeatures

Shake, Rattle, and Probe

Damond Benningfield, Science Writer by Damond Benningfield 25 August 202217 January 2023

Helioseismology allows scientists to study the interior of the Sun, solve some basic physics mysteries, and forecast space weather.

NASA的卡西尼号宇宙飞船捕捉到了位于木星前面的木卫二。
Posted inResearch Spotlights

海洋世界的动力可能受旋转控制

by Morgan Rehnberg 27 July 202227 July 2022

新的模拟结果表明,在自然罗斯比数较小的冰卫星上的地下海洋可能主要受到旋转效应的影响。

A thick, wide expanse of whitish-bluish ice encroaches on what appears to a field of grass.
Posted inNews

Precession Helped Drive Glacial Cycles in the Pleistocene

Katherine Kornei, Science Writer by Katherine Kornei 11 July 202221 July 2022

By studying bits of rock scooped up by ancient glaciers, researchers have pinned down that recent glacial variability was driven, in part, by changes in the direction of Earth’s axis of rotation.

Europa situated in front of Jupiter.
Posted inResearch Spotlights

Dynamics of Ocean Worlds Likely Controlled by Their Rotation

by Morgan Rehnberg 9 May 202227 July 2022

New simulations suggest that subsurface oceans on icy moons with small natural Rossby numbers may be dominated by rotational effects.

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?

A yellow and orange star in the center of the image. A vertical line through the center of the star indicates the star’s spin axis, and two white arrows indicate that the star rotates clockwise. An exoplanet transits the star as a dark circle. Its orbit cuts across the star’s surface as a white line with arrows indicating that it moves from top to bottom.
Posted inNews

Peculiar Planets Prefer Perpendicular Paths

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 29 July 202128 September 2021

Some exoplanets orbit their stars from pole to pole instead of across the equator. Why do they do that?

An image of Venus in visible light with swirls of clouds ranging from white to tan to light orange.
Posted inNews

Fifteen Years of Radar Reveal Venus’s Most Basic Facts

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 1 June 202110 October 2021

Venus’s heavy atmosphere tugs the planet’s surface enough to change the length of its day by up to 21 minutes.

Slice of a meteorite determined to have originated on Mars on the basis of its minerology and gases trapped in the rock.
Posted inNews

Martian Meteorites Shed Light on Solar System’s Early Dynamics

Mara Johnson-Groh, Science Writer by Mara Johnson-Groh 24 May 20214 October 2021

Chemical compositions of rocks from Mars indicate that the earliest orbits of Jupiter and Saturn were more circular than they are today.

Plot showing an example of errors in estimates of thermospheric density derived using a range of different models.
Posted inEditors' Highlights

Better Thermospheric Monitoring is Vital to Space Safety

by Michael A. Hapgood 18 May 202127 July 2022

Better real-time estimates of thermospheric density are vital to the safe management of satellite traffic in Low Earth orbit, ensuring those satellites continue to deliver critical services.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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