![]() Over the four Venus days of the nominal science mission, VERITAS is estimated to return about 28 terabits (3.5 terabytes) of science data.Environmental and Social Impact Assessment Study for the Proposed Export Abattoir at Nomotio, Samburu CountyĮnvironmental and Social Impact Assessment Study for the Proposed Liquefied Petroleum Gas (LPG) Storage and Filling Plant on LR No.27/Mwihoti/Githurai, Roysambu Sub-county, Nairobi CountyĮnvironmental, Health and Safety Audit for Kenol Kobil LPG and lubricants depots and fuel stations in western Kenya, 2014Įnvironmental, Health and Safety Audit for Kenol Kobil petroleum fuel depots and LPG plants in KenyaĮnvironmental and social impact assessment for the proposed rehabilitation and upgrade to bitumen standard of the 3rd Avenue in Eastleigh Estate, Nairobi CountyĮnvironmental, Health and Safety Audit for Kenol Kobil ninety (90) petroleum stations in KenyaĮnvironmental audit for Kenyatta National Hospital, 2017Įnvironmental and social impact assessment for the proposed Kalobeyei Refugee New Site at Kakuma – Turkana West Sub County Nominally, during each day of operations in science phase II, VEM and VISAR will collect data for 16 hours, then the spacecraft will point its high-gain antenna at Earth and lock up with the DSN for an eight-hour session, during which the mission acquires gravity science data. Science phase II starts after further aerobraking places VERITAS into a circular, low-altitude orbit over the poles that allows global observations. Science phase I occurs while aerobraking is paused, about six months after arrival at the planet. The VERITAS science mission consists of two phases. (One day on Venus is about 247 Earth days long.) Science Operations After the second aerobraking phase, the second science phase begins, and lasts 2.7 years, or four Venus days. Aerobraking reduces the spacecraft's orbit period (the time it takes to orbit Venus) from 10 hours to 1.6 hours.ĭuring a pause in aerobraking lasting about four-and-a-half months, the mission conducts its first science phase, with only the VEM instrument collecting data. The two aerobraking phases, together, reduce the spacecraft's orbital altitude at its farthest point from Venus (known as apoapsis) from nearly 20,000 miles to 250 miles (32,000 kilometers to 400 kilometers). VERITAS enters its first aerobraking phase about a month after arrival. Once aerobraking is completed, VERITAS will be in its final science orbit. Each aerobraking phase lasts about five months. A second burn of the engines, called a period reduction maneuver, will shrink the size of the orbit and reduce the period to just 10 hours.Īfter that, VERITAS begins two phases of aerobraking – dipping repeatedly into the upper atmosphere of Venus and using drag on the solar arrays to reduce the spacecraft's speed and further lower its orbit. The spacecraft's initial orbit at Venus, following orbit insertion, will be highly elliptical, lasting 120 hours. VERITAS performs an orbit insertion maneuver using its six main engines. The spacecraft arrives at Venus after a six-month cruise, and enters a polar orbit (orbiting over the poles, rather than the equator). ![]() VERITAS is currently planned to launch in December 2027 on a high-performance vehicle (to be selected later by NASA). ![]() Mission Phases Launch, Cruise, and Arrival (NASA's other Venus mission, DAVINCI, will host the Compact Ultraviolet to Visible Imaging Spectrometer. ![]() Its precursor, the first Deep Space Atomic Clock, was launched into Earth orbit in 2019. The ultra-precise clock signal generated with this technology will ultimately help enable autonomous spacecraft maneuvers and enhance radio science observations. VERITAS will host the Deep Space Atomic Clock-2, built by JPL and funded by NASA’s Space Technology Mission Directorate. ![]() When NASA selected its two new Venus missions in 2021, it also chose a pair of technology demonstrations to fly along with them. ![]()
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