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Cassini Lightning

Published: April 12, 2010

NASA's Cassini scientists waited years for the right conditions to produce the first movie that shows lightning on another planet - Saturn.

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The Perseids are already showing up in our night skies, and they peak in mid-August.

The Perseids are on the Rise!

The Perseids are on the Rise!

Seventy-five years ago, Lyman Spitzer envisioned a future for space exploration that deepened our curiosity about the cosmos.

Lyman Spitzer: Making Space For Hubble

Lyman Spitzer: Making Space For Hubble

A dramatic triplet of galaxies takes center stage in this image from the NASA/ESA Hubble Space Telescope.

Hubble Spots Squabbling Galactic Siblings

Hubble Spots Squabbling Galactic Siblings

The instrument on the International Space Station is uniquely positioned to provide wildfire responders with a high-resolution look at fire progression.

ECOSTRESS Data Incorporated Into New Wildfire Response Tool

ECOSTRESS Data Incorporated Into New Wildfire Response Tool

Three studies have cast doubt on the premise of subsurface lakes below the Martian south pole.

Clays, Not Water, Are Likely Source of Mars ‘Lakes'

Clays, Not Water, Are Likely Source of Mars ‘Lakes'

A new index shows that the world’s rainforests are responding differently to threats like a warming climate and deforestation.

Index Ranks Rainforests' Vulnerability to Climate and Human Impacts

Index Ranks Rainforests' Vulnerability to Climate and Human Impacts