EnVision will be ESA’s next-generation Venus orbiter, providing a holistic view of the planet from its inner core to its upper atmosphere. to see how Venus and Earth evolved differently and why.
The mission was selected by the ESA’s Science Programs Committee on June 10 as the fifth intermediate mission in the agency’s Cosmic Vision plan, with the goal of launching in early 2030.
Günther Hasinger, ESA’s Scientific Director, said: “A new era in exploring our closest but very different solar system neighbors awaits us. “In conjunction with the newly announced NASA-led Venus mission, We will have a very comprehensive science project on this mysterious planet in the next decade.”
Why is this important scientific question about planets? Although they are similar in size and composition. But the adjacent neighbors in our inner solar system experience severe climate change. Instead of a livable world like Earth But there is a toxic atmosphere and It was covered in thick clouds rich in sulfuric acid. What experience does Venus have in reaching this state and predicting the fate of this planet should it suffer a greenhouse disaster? Is Venus still geologically active? It once hosted the ocean and even sustained life? What lessons can be learned about the evolution of terrestrial planets in general? As we discover more Earth-like exoplanets
EnVision’s innovative tool package answers these key questions. It will install a European toolkit. Including a silencer to reveal the basement. and spectrometers to study the atmosphere and surface. The spectrometer examines traces of gases in the atmosphere and analyzes the composition of the surface. by looking for any changes That may be linked to signs of active volcanoes. NASA’s radar will image and map the surface. Radio science experiments will also explore the planet’s internal structure and gravitational field. as well as to examine the structure and composition of the atmosphere This tool works together to characterize interactions between different regions. of the planet at its best From the interior to the surface to the atmosphere It provides a comprehensive global view of planets and their processes. of the planet
EnVision follows ESA’s highly successful Venus Express (2005-2014), which focuses primarily on atmospheric research. JAXA’s Akatsuki spacecraft has been studying the atmosphere since 2015. EnVision will improve radar images of the surface provided by JAXA’s Akatsuki spacecraft. NASA’s Magellan greatly improved in the 1990s, working with the upcoming Davinci+ (DAVINCI+). (Deep Atmospheric Survey of Noble Gases, Chemistry, and Imaging) and VERITAS (Venus Radiation. The three new spacecraft will provide the most comprehensive study of Venus ever
“EnVision has benefited from a collaboration with NASA that combines the excellence in science and technology expertise of Venus in Europe and America. to build on this ambitious mission,” said Günther. “EnVision strengthens Europe’s role in scientific exploration of the solar system. Our growing fleet of missions will provide us and future generations with the best insights into how our planetary neighborhood works. It is especially relevant in an era where we are discovering more and more unique exoplanet systems.”
“We are excited to be involved in ESA’s exciting new mission to probe Venus,” said Thomas Zurbuchen, NASA’s Associate Science Administrator. our work Together with NASA’s Discovery mission to Venus, the scientific community will have a powerful new set of data and work together to understand how Venus formed. and how textures and atmospheres change over time.”
After the first call for a fifth mid-range mission concept in 2016, the final race took place at EnVision and Theseus, a temporary high-energy sky. and early explorers of the universe Theseus will monitor transient events throughout the sky and, in particular, focus on gamma-ray bursts during the first billion years of the universe. To help clarify the life cycle of the first stars. While the Senior Scientific Committee recommends EnVision, it acknowledges that Theseus also has a very interesting scientific case that can make a significant contribution to the field.
The next step for EnVision is a move to a more detailed ‘Definition Phase’ where satellite designs and instruments are aligned. has been completed After the design process European industrial contractors will be chosen to build and test EnVision before launching the Ariane 6. The earliest launch opportunity for EnVision is in 2031, with other possible options in 2032 and 2033. About 15 months to reach Earth, and another 16 months to complete a circular orbit via aerobrake, its 92-minute orbit is semi-polar with an altitude of between 220 km and 540 km.
Solar Orbiter, Euclid, Plato and Ariel have been selected as mid-range missions. Solar Orbiter launches in February 2020; Euclid, Plato and Ariel will be launched throughout this decade.
EnVision is an ESA-led mission with significant contributions from NASA that will provide support for VenSAR (Synthetic Aperture Radar), as well as support for the Deep Space Network, other payload instruments. Supported by ESA member states, ASI, DLR, BelSPO and CNES lead the purchase of SRS (Subsurface Sounding Radar), VenSpec-M, VenSpec-H and VenSpec-U spectrometers respectively. by institutions in France and Germany