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Volga River Delta

Volga River Delta

The deep green braids of the Volga River fan into a broad delta on the northwest shore of the Caspian Sea. More than 500 channels flow from the river into the sea, creating a web of wetlands that supports hundreds…

2 min read
NASA
Antarctic Megadunes

Antarctic Megadunes

In Antarctica, relentless winds have created a unique type of snowdrift pattern known as megadunes. Formed by centuries of nearly continuous winds, megadunes are 1 to 8 meters high (1 meter is 3.3 feet), and 2 to 6 kilometers from…

3 min read
NASA
Las Cruces, New Mexico

Las Cruces, New Mexico

The city of Las Cruces is located within the Rio Grande Rift, a large geological feature that extends from Colorado southwards into Mexico. The Rio Grande Rift is marked by a series of depressions punctuated with uplifted mountains. Sinking in…

3 min read
NASA
Hubble Captures Deep Impact’s Collision with Comet

Hubble Captures Deep Impact’s Collision with Comet

NASA’s Hubble Space Telescope captured the dramatic effects of the collision early July 4 between an 820-pound projectile released by the Deep Impact spacecraft and comet 9P/Tempel 1. This sequence of images shows the comet before and after the impact.…

2 min read
NASA
Orange River, South Africa

Orange River, South Africa

In southwestern Africa, the Orange River carves through a rugged, stark, and beautiful landscape before emptying its desert-sand-filled waters into the South Atlantic Ocean. The river is a political and geographical divide, separating Namibia from South Africa and the massive…

2 min read
NASA
Haze over the United States

Haze over the United States

In the eastern United States, weather conditions have been conspiring with human activities to generate hazy skies across a broad area. Haze, or particle pollution, has been lingering in the skies over the Mississippi River Valley, the Deep South, the…

2 min read
NASA
Safsaf Oasis, Eygpt

Safsaf Oasis, Eygpt

How does a scientist know that the vast, featureless sand fields of the Sahara once ran with water? Water leaves its mark on the land, cutting channels and canyons where rivers flowed and leaving depressions where lakes once pooled. In…

2 min read
NASA
Anak Krakatau

Anak Krakatau

Brown and almost barren, Anak Krakatau rises out of the Sunda Strait, the narrow band of the Indian Ocean that separates the Indonesian islands of Sumatra and Java. This detailed image of the young volcano was taken by the Ikonos…

3 min read
NASA
Cassini Significant Events — for 06/23/05 — 06/28/05

Cassini Significant Events — for 06/23/05 — 06/28/05

Cassini Significant Events — for 06/23/05 — 06/28/05 June 30, 2005 (Source: Cassini Project) The most recent spacecraft telemetry was acquired Wednesday from theGoldstone tracking stations. The Cassini spacecraft is in an excellent stateof health and is operating normally. Information…

5 min read
NASA
Colorful Chlorophyll around Marquises Islands

Colorful Chlorophyll around Marquises Islands

The disturbance that islands cause in the flow of water currents in the ocean creates turbulence that mixes surface waters with deeper ocean layers. This mixing increases the amount of nutrients available in the warm surface waters where microscopic ocean…

2 min read
NASA
Paleoclimatology: Written in the Earth

Paleoclimatology: Written in the Earth

Like detectives reconstructing a crime scene, paleoclimatologists scour the Earth for clues to understand the climates of the past and to learn how and why climate changes.

6 min read
NASA
Paleoclimatology: Introduction

Paleoclimatology: Introduction

Like detectives reconstructing a crime scene, paleoclimatologists scour the Earth for clues to understand the climates of the past and to learn how and why climate changes.

5 min read
NASA
Fires on Sumatra

Fires on Sumatra

A thick cloud of smoke pours from forest fires on the Indonesian island of Sumatra. Forest fires are common in Indonesia during the hot, dry months of the dry season, which runs from June to September.

1 min read
NASA
Sept-îles, Gulf of St Lawrence, Quebec, Canada

Sept-îles, Gulf of St Lawrence, Quebec, Canada

Seven Island Bay (left side of the image) is one of the largest and best-protected harbors on Quebec’s north shore of the Gulf of St. Lawrence. Because this is both a deep-water port and ice-free year round, Sept-Îles is one…

2 min read
NASA
Hubble Captures Outburst from Comet Targeted By Deep Impact

Hubble Captures Outburst from Comet Targeted By Deep Impact

In a dress rehearsal for the rendezvous between NASA’s Deep Impact spacecraft and comet 9P/Tempel 1, the Hubble Space Telescope captured dramatic images of a new jet of dust streaming from the icy comet. The images are a reminder that…

3 min read
NASA

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