Astronomers believe they've detected an atmosphere around a tiny, icy world beyond Pluto

Event Overview

Astronomers believe they've detected an atmosphere around a tiny, icy world beyond Pluto

Updated 11 hours ago
PBS NewsHour
CNN
2 articles2 sources
Summary

Just 300 miles or so across, this mini Pluto is thought to be the solar system's smallest object. This cluster currently includes 2 articles from 2 sources.

What This Means

This cluster currently includes 2 articles from 2 sources. Sources in this event include PBS NewsHour, CNN.

Original Reporting (2)
Astronomers believe they've detected an atmosphere around a tiny, icy world beyond Pluto
PBS NewsHour
PBS NewsHour
Lean Left
5/4/2026

Astronomers believe they've detected an atmosphere around a tiny, icy world beyond Pluto

Marcia Dunn, Associated Press Marcia Dunn, Associated Press CAPE CANAVERAL, Fla. (AP) — A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by volcanic eruptions or a comet strike. Just 300 miles (500 kilometers) or so across, this mini Pluto is.

Thin atmosphere detected around distant object beyond Pluto | CNN
CNN
CNN
Left
5/4/2026

Thin atmosphere detected around distant object beyond Pluto

Astronomers have detected a thin atmosphere around a tiny celestial body in the outer solar system for the first time — an object previously thought to be too small to support the presence of an atmosphere. Thousands of frozen, rocky bodies called trans-Neptunian objects, or TNOs, exist in the Kuiper Belt on the edge.