• About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos
  • AGU.org
  • Career Center
  • Join AGU
  • Give to AGU
  • About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos
Skip to content
  • AGU.org
  • Career Center
  • Join AGU
  • Give to AGU
Eos

Eos

Science News by AGU

Support Eos
Sign Up for Newsletter
  • About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos

R. Cowen

Image of comet 67P/Churyumov-Gerasimenko from a camera aboard Rosetta spacecraft shortly before the spacecraft’s controlled crash.
Posted inNews

Rosetta Spacecraft Death-Dives into Comet Companion—On Purpose

by R. Cowen 30 September 201617 January 2023

On the way to its demise, the probe intimately viewed a dust-spewing pit and measured close up the gravity field, temperature, and other features of the comet.

Posted inNews

Proposed Planet Nine Elicits Cheers, Yawns, Hunt for Proof

by R. Cowen 4 February 201625 April 2023

Evidence of a large, unseen planet at the solar system's margins prompted a flurry of scientific paper downloads, as well as oodles of skepticism. There's no sighting yet of the purported body.

Posted inNews

New Step Toward Finding Earth 2.0

by R. Cowen 8 January 201617 January 2023

Researchers unveil a way to tease out the wobble of a star caused by unseen planets despite the confounding effects of star spots, which are the sunspots of distant stars.

Posted inNews

World Without Time

by R. Cowen 31 December 20156 January 2023

On New Year's Day 2019, a spacecraft known for its historic flyby of Pluto will take an unprecedented look into the distant past by flying right up to a frozen remnant of the original solar system.

Posted inNews

Exoplanets: First Baby Pictures Unveiled

by R. Cowen 3 December 20152 May 2023

New observations of stars hundreds of light-years from Earth reveal evidence of planets still surrounded by disks of the primordial materials they grow from.

Posted inNews

Jupiter's Europa Helps Earthlings See Sister Moon's Volcano

by R. Cowen 17 November 20152 May 2023

By briefly slipping between Earth and sister Jovian moon Io, Europa fortuitously enabled an Earth-based telescope to observe, with greater detail than ever before, a huge, puzzling volcano on Io.

Posted inNews

The Dwarf Planet That Came in from the Cold—Maybe

by R. Cowen 12 November 201517 February 2023

The presence of ammonia-rich clay on much of the surface of Ceres suggests that this dwarf planet—the largest object in the asteroid belt—may have formed far out in the solar system, then wandered in.

Posted inNews

Pluto: In the Icebox but Maybe Still Cookin'

by R. Cowen 9 November 20156 January 2023

New evidence of ice volcanoes and of middle-aged terrains on Pluto's surface suggests that the dwarf planet has remained geologically active ever since it first formed billions of years ago.

Posted inNews

New Spin on Pluto's Moons

by R. Cowen 9 November 20156 January 2023

Strangely speedy rotation rates of Pluto's tiny orbiting companions show up in a trove of images taken as the New Horizons spacecraft approached the dwarf planet last spring and early summer.

Posted inFeatures

The Art and Science of Hubble's Images

by R. Cowen 27 April 201510 January 2023

How do Hubble images get their vivid colors and subtle shading?

Posts pagination

1 2 Older posts
A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

Features from AGU Publications

Research Spotlights

Simplicity May Be the Key to Understanding Soil Moisture

23 May 202523 May 2025
Editors' Highlights

Creep Cavitation May Lead to Earthquake Nucleation

22 May 202521 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
Eos logo at left; AGU logo at right

About Eos
ENGAGE
Awards
Contact

Advertise
Submit
Career Center
Sitemap

© 2025 American Geophysical Union. All rights reserved Powered by Newspack