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Glory (satellite)

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This article contains information regarding a spacecraft that has recently been involved in a launch failure.

Details may change as more information on the anomaly becomes available Launch details: Orbital Sciences used a Taurus-XL 3110 to launch Glory, KySat-1, HERMES and Explorer-1 [PRIME] for NASA, Kentucky Space, the University of Colorado, and Montana State University. Launch occurred from LC-576E at Vandenberg Air Force Base.

Launch was scheduled for March 4, 2011 at 10:09 UTC (2:09 am PST). See 2011 in spaceflight and the Spaceflight Portal for further details.

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Glory
Artist's impression of Glory orbiting Earth.
Operator	NASA / GSFC
Mission type	Orbiter
Satellite of	Earth
Launch date	2011-03-04, 10:09:43 UTC
Launch vehicle	Taurus XL
Launch site	Launch Complex 576 Vandenberg Air Force Base
Mission duration	Launch failure, after 5 Minutes, 17 seconds. Planned: 3–5 years
COSPAR ID	Glory
Homepage	GSFC Glory website
Mass	545 kg (1,202 lb)
Power	400 W (solar array)

On February 23, 2011, NASA Deputy Administrator Lori Garver (left) visited the mission's launch site.

The Glory satellite was a planned NASA satellite mission that would have collected data on the chemical, micro-physical and optical properties—and the spatial and temporal distributions—of aerosols, and would have collected solar irradiance data for the long-term climate record. The science focus areas served by Glory included: atmospheric composition; carbon cycle, ecosystems, and biogeochemistry; climate variability and change; and water and energy cycles.^[1] The satellite was lost on March 4, 2011, when its Taurus XL carrier rocket malfunctioned. The cost of the satellite was US$424 million.

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Launch

Launch from Vandenberg Air Force Base, near Lompoc, California, aboard a Taurus XL rocket was originally planned for February 23, 2011.^[2] It was postponed due to a malfunction in ground support equipment.^[3] The next planned date of liftoff was March 4, 2011.^[4] The Taurus rocket also carried three small CubeSat satellites built by university students in Montana, Colorado and Kentucky.^[5]

The launch took place on March 4, 2011, at 2:09:43 am Pacific Standard Time (10:09:43 UTC) from Vandenberg Air Force Base. The Taurus XL rocket's first three stages functioned as planned, but the nose cone (also known as the payload fairing) failed to separate 2 minutes 58 seconds after the launch.^[6] The nose cone covers and protects the satellite during launch and ascent, and is designed to separate and fall away shortly after the launch. Due to the failure of the nose cone to separate, the rocket remained too heavy to reach the correct orbit. According to launch director Omar Baez, the satellite and launcher probably ended up in the southern Pacific Ocean. The failure was estimated to have cost at least $424 million.^[7]^[8] This only includes the cost of the satellite itself, and not the cost of the launcher and launch services. During the previous failed Taurus XL launch, the vehicle and services were estimated to have cost $54m.^[9]

The previous Taurus XL launch with the Orbiting Carbon Observatory (OCO) in February 2009 also ended in a failure due to failed payload fairing separation.^[7]^[10] Following the failed OCO mission, Taurus XL launches were put on hold for two years as the rocket's manufacturer Orbital Sciences Corporation tried to fix the payload fairing separation problem, obviously without success.^[11] A British OCO scientist said the loss of Glory was a great blow to the NASA Earth science program, especially since the reason for the launch failure was the same as with OCO.^[8]

During a news conference shortly after the launch, Rich Straka from Orbital Sciences Corporation said his company was investigating the failure, noting, "there really isn't enough data to say anything more than the fairing didn't separate."^[12]

Scientific instruments

Aerosol Polarimetry Sensor (APS)
	The Aerosol Polarimetry Sensor (APS) is a continuous scanning sensor that has the capability to collect visible, near infrared, and short-wave infrared data scattered from aerosols and clouds. It is designed to make multi-angle observations of Earth and atmospheric scene spectral polarization and radiance. Objectives Determine the global distribution of natural and man-made aerosols (black carbons, sulfates, etc.) with accuracy and coverage sufficient for reliable quantification of: the aerosol effect on climate; the anthropogenic component of the aerosol effect; the potential regional trends in natural and man-made aerosols. Determine the direct impact of aerosols on the radiation budget and its natural and anthropogenic components. Determine the effect of aerosols on clouds (microphysics and coverage) and its natural and anthropogenic components. Determine the feasibility of improved techniques for the measurement of black carbon and dust absorption to provide more accurate estimates of their contribution to the climate forcing. Instrument scientist: Brian Cairns / GSFC (website)
Cloud Camera
	The cloud camera is a high-spatial-resolution two-band radiometer intended to facilitate the identification of cloudcontaminated APS pixels and to determine the fraction of the pixel area occupied by clouds. Over ocean, the cloud camera is used to determine aerosol load and fine mode fraction based on the aerosol microphysical model determined from APS measurements. The Cloud Camera is not a separate instrument, rather it is used to identify clouds in the APS nadir pixel.
Total Irradiance Monitor (TIM)
	The Total Irradiance Monitor (TIM) is an active cavity radiometer that records total solar irradiance. It has four identical radiometers to provide redundancy and to help detect changes in the instrument from exposure to solar radiation. TIM is mounted on a platform that moves the instrument independent of the spacecraft. Instrument scientist: Greg Kopp / GSFC / University of Colorado (website / UoC website)