Enjoying EarthSky? Subscribe.

231,640 subscribers and counting ...

Jorge Salazar
Image via Patricia Evans

Hole-punch clouds are made by jets

Sometimes people report them as UFOs, but they’re called hole-punch clouds and they’re made by jets. The connection between hole-punch clouds, jets and snowfall.

Image Credit: Jim Bowers, U.S. Geological Survey

Top 4 facts about landslides

Last weekend’s fatal mudslide in Washington state obliterated the village of Oso, Washington and left a trail of devastation in its wake. On Tuesday, the death toll stood at 14.

Artist's concept of New Horizons. Image Credit: NASA

This date in science: Pluto gets a demotion

On August 24, 2006, astronomers voted to demote Pluto to dwarf planet status. Hear from Alan Stern, lead scientist on a space mission to Pluto.

Mayan temple.  Image Credit: wikimedia

Kathryn Reese-Taylor on the Mayan calendar and 2012 doomsday prophesies

EarthSky spoke with a professor of Mayan archaeology about the supposed connection between an ancient Mayan calendar and 2012 doomsday prophecies.

Undersea black smoker with Alvin mechanical arm

James Holden explores life thriving in deep, hot undersea vents

Deep in cracks of hot undersea volcanoes, microbes inhale hydrogen and carbon dioxide and exhale methane. They might help scientists understand life beyond Earth.

Image Credit: NASA Goddard Space Flight Center

Peter Claggett sees changes to Chesapeake Bay with Landsat

Landsat has been observing the landscape of the vast 64,000 square miles of watershed in Chesapeake Bay for decades.

Image Credit: ESO/L. Calçada

Stéphane Udry: Evidence of billions of rocky, habitable planets in our galaxy

Astronomers have found evidence that billions of rocky planets might orbit the habitable zones around red dwarf stars in our Milky Way.


Harold Huff develops meat-like soy chicken

A soy chicken product with something new – what food scientists call ‘the right chew.’

Green foxtail via Missouriplants.com

Andrew Leakey studies grasses for biofuels

Andrew Leakey is part of a five-year, $12 million study of grasses useful for biofuels that can grow with as little land, fertilizer, and water as possible.

Image Credit: ESO

World’s biggest astronomy project: ALMA telescope

What better goal for the world’s biggest telescope than to probe details of how stars like our sun and planets like Earth came to be?