Spirit, also known as MER-A (Mars Exploration Rover - A) or MER-2, is a robotic rover on Mars, active from 2004 to 2010. It was one of two rovers of NASA's ongoing Mars Exploration Rover Mission. It landed successfully on Mars at 04:35 Ground UTC on January 4, 2004, three weeks before its twin, Opportunity (MER-B), landed on the other side of the planet. Its name was chosen through a NASA-sponsored student essay competition.
Columbia Hills
Spirit drove from Bonneville crater in a direct line to the Columbia Hills. The route was only directly controlled by the engineers when the terrain was difficult to navigate; otherwise, the rover drove in an autonomous mode. On sol 159, Spirit reached the first of many targets at the base of the Columbia Hills called West Spur. Hank's Hollow was studied for 23 sols. Within Hank's Hollow was the strange-looking rock dubbed "Pot of Gold". Analysing this rock was difficult for Spirit, because it lay in a slippery area. After a detailed analysis with the AXPS-and the Mossbauer instrument it was detected that it contains hematite. This kind of rock can be built in connection with water.  As the produced energy from the solar panels was lowering due to the setting sun and dust the Deep Sleep Mode was introduced. In this mode the rover was shut down completely during the night in order to save energy, even if the instruments would fail. The route was selected so that the rover's panels were tilted as much as possible towards the winter sun.  From here, Spirit took a northerly path along the base of the hill towards the target Wooly Patch, which was studied from sol 192 to sol 199. By sol 203, Spirit had driven southward up the hill and arrived at the rock dubbed "Clovis". Clovis was ground and analyzed from sol 210 to sol 225. Following Clovis came the targets of Ebenezer (Sols 226-235), Tetl (sol 270), Uchben and Palinque (Sols 281-295), and Lutefisk (Sols 296-303). From Sols 239 to 262, Spirit powered down for solar conjunction, when communications with the Earth are blocked. Slowly, Spirit made its way around the summit of Husband Hill, and at sol 344 was ready to climb over the newly designated "Cumberland Ridge" and into "Larry's Lookout" and "Tennessee Valley". Spirit also did some communication tests with the ESA orbiter Mars Express though most of the communication was usually done with the NASA orbiters Mars Odyssey and Mars Global Surveyor.

Q: What is Columbia Hills?
A: Spirit reached the first of many targets at the base of the Columbia Hills called West Spur.

Q: What happened after this?
A: Hank's Hollow was studied for 23 sols.

Q: Why is this significant?
A: it contains hematite. This kind of rock can be built in connection with water.

Q: What did the Spirit do?
A: a detailed analysis with the AXPS-and the Mossbauer instrument

Q: Is there anything else significant about this time?
A: the rover was shut down completely during the night in order to save energy,
What was the result of this?
The route was selected so that the rover's panels were tilted as much as possible towards the winter sun.
The route was selected so that the rover's panels were tilted as much as possible towards the winter sun.