Deep Space 2

Deep Space 2
	A Deep Space 2 probe with heatshield and mounting attached to the Mars Polar Lander
Mission type	Mars impactor
Operator	NASA / JPL
Website	jpl.nasa.gov
Mission duration	334 days; Mission failure
Spacecraft properties
Manufacturer	Jet Propulsion Laboratory
Launch mass	2.4 kg (5.3 lb) each
Power	300mW Li-SOCl2 batteries
Start of mission
Launch date	20:21:10, January 3, 1999 (UTC)
Rocket	Delta II 7425-9.5; D-265
Launch site	Cape Canaveral SLC-17
Contractor	Boeing
Deployed from	Mars Polar Lander (precluded)
End of mission
Disposal	Failure in transit
Last contact	20:00, December 3, 1999 (UTC)
Mars impactor
Spacecraft component	Amundsen and Scott
Impact date	~20:15 UTC ERT, December 3, 1999
Impact site	73°S 210°W / 73°S 210°W (projected)
Instruments
	Impact accelerometer
	Water detection apparatus
	Soil conductivity probe
	Descent accelerometer
	; Mars Surveyor 98 mission logo New Millennium program ← Deep Space 1 Earth Observing-1 → Mars Surveyor '98

Deep Space 2 was a NASA space probe, part of the New Millennium Program. It included two highly advanced miniature space probes that were sent to Mars aboard the Mars Polar Lander in January 1999.^[1] The probes were named "Scott" and "Amundsen", in honor of Robert Falcon Scott and Roald Amundsen, the first explorers to reach the Earth's South Pole. Intended to be the first spacecraft to penetrate below the surface of another planet, after entering the Mars atmosphere DS2 was to detach from the Mars Polar Lander mother ship and plummet to the surface using only an aeroshell impactor, with no parachute. The mission was declared a failure on March 13, 2000, after all attempts to reestablish communications following the descent went unanswered.^[2]

The Deep Space 2 development costs were US$28 million.^[3]

^ ^a ^b Davis, Phil; Munsell, Kirk (January 23, 2009). "Missions to Mars: Deep Space 2 - Key Dates". Solar System Exploration. NASA. Archived from the original on April 20, 2009. Retrieved July 8, 2009.
^ "Deep Space 2 (DEEPSP2)". NSSDC Master Catalog. NASA - National Space Science Data Center. 2000. Retrieved July 8, 2009.
^ "Mars Polar Lander Mission Costs". The Associated Press. 1999-12-08. Retrieved 2020-09-30.

[dates-1] Davis, Phil; Munsell, Kirk (January 23, 2009). "Missions to Mars: Deep Space 2 - Key Dates". Solar System Exploration. NASA. Archived from the original on April 20, 2009. Retrieved July 8, 2009.

[NSSDC-2] "Deep Space 2 (DEEPSP2)". NSSDC Master Catalog. NASA - National Space Science Data Center. 2000. Retrieved July 8, 2009.

[AP-mission-costs-3] "Mars Polar Lander Mission Costs". The Associated Press. 1999-12-08. Retrieved 2020-09-30.

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