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Katy Human

Jack Halbrook, 10, left, wakes up early Thursday in a Lockheed Martin viewing room to watch the launch of a Mars orbiter. His father, Tim, is one of the projects lead engineers. A malfunctioning fuel sensor scuttled the launch.

3rd time a charm for Mars?

May 8, 2016 at 8:41 a.m.

3rd time a charm for Mars?

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Colo.-N.M. border rolled by “18-wheeler” earthquake

August 10, 2005 at 5:39 p.m.

Colo.-N.M. border rolled by "18-wheeler" earthquake

Celestial show returns for its annual encore

May 8, 2016 at 7:27 a.m.

Celestial show returns for its annual encore

Geologist fears Colo. quake risk underplayed

May 8, 2016 at 8:31 a.m.

Geologist fears Colo. quake risk underplayed

The orbiter, which weighs 2 tons, is unpacked and moved to a testing stand at the Jet Propulsion Laboratory in May.

Massive data about Mars expected

May 8, 2016 at 8:25 a.m.

Massive data about Mars expected

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Springs center key to safety of shuttle

August 5, 2005 at 4:45 p.m.

Springs center key to safety of shuttle

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Craft carries Jeffco sealant

July 26, 2005 at 5:16 p.m.

Craft carries Jeffco sealant

A close-up of the fossil tracks, possibly from an Ichniotherium. They are believed to be from the Permian period, 290 million years ago.

Tracks found at Maroon Bells intrigue

September 23, 2016 at 8:43 a.m.

Tracks found at Maroon Bells intrigue

John Daniel, 20, tries to cool off Thursday while panhandling at Broadway and Sixth Avenue. I hate the heat, he said. It is part of the reason I left Florida, but it is just as hot here. I might as well go back there and find work.

Another record falls as heat goes on

May 8, 2016 at 8:27 a.m.

Another record falls as heat goes on

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At Denver Zoo, critters take cue from the sloth

July 21, 2005 at 3:42 p.m.

At Denver Zoo, critters take cue from the sloth