Jennifer Welsh

Latest articles by Jennifer Welsh

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3 New Heavy Elements Named: Darmstadtium, Roentgenium, Copernicium

By Jennifer Welsh published

Two physicists get their place on the periodic table of elements.

The Universe
Artist Illustration of Massive Gamma Ray Burs

Could Blasts from Cosmic Collisions Destroy Life on Earth?

By Jennifer Welsh published

Researchers are trying to connect stellar radiation events to extinctions visible in the fossil record, and are able to estimate how often an extinction-level gamma ray burst may occur.

Earth
The Upper Atmosphere Research Satellite hangs in the grasp of the Remote Manipulator System against the blackness of space during deployment from Space Shuttle Discovery, September 1991.

How Tumbling Motion Delayed Falling UARS Satellite's Plunge to Earth

By Jennifer Welsh published

A change in NASA's UARS satellite course has delayed the satellite's descent.

Satellites
A German satellite image provides a detailed view of Istanbul from more than 300 miles (500 kilometers) up. There is dense housing where yellow is predominates. In the city itself, only a few areas remain undeveloped and are thus shown in green.

Satellite Image Reveals Spread of a Megacity

By Jennifer Welsh published

New satellite imagery show's Istanbul's urban explosion.

Satellites