M5 – EnVision

The European Space Agency's M5 mission is EnVision, a proposed spacecraft that would study the geology, atmosphere, and potential habitability of Venus. In this article, we will explore the EnVision mission, including its timeline, purpose, scientific objectives, design, cost, and potential achievements.

When:

The EnVision mission was first proposed in 2016 as part of the European Space Agency's Medium-Class mission selection. After several years of evaluation, it was selected as the M5 mission in June 2021. If all goes as planned, the EnVision spacecraft is expected to launch in the early 2030s and arrive at Venus in 2032.

Why:

The EnVision mission aims to study the planet Venus, which has been relatively understudied in comparison to other planets in the Solar System. The planet is known for its thick and toxic atmosphere, which creates a greenhouse effect that has caused temperatures on the surface to rise to over 450 degrees Celsius. EnVision will help scientists understand the processes that have led to the planet's current state, including its geological history, volcanic activity, and atmospheric evolution. Additionally, the mission will study the planet's potential habitability, as Venus has been identified as a possible location for microbial life in its upper atmosphere.

How:

The EnVision spacecraft will be designed to study Venus using a suite of scientific instruments. It will carry a high-resolution camera to capture detailed images of the planet's surface, as well as a spectrometer to analyze the composition of the atmosphere and surface. The spacecraft will also carry a radar instrument to probe the planet's subsurface, allowing scientists to study its geology and potential habitability. Additionally, EnVision will carry a magnetometer to study the planet's magnetic field and a radio science experiment to study its atmosphere and gravitational field.

Cost:

The EnVision mission is expected to cost approximately 610 million euros, which includes the spacecraft development, launch, and mission operations. The mission will be funded by the European Space Agency and its member states, with contributions from international partners.

Achievements:

The EnVision mission is expected to achieve several scientific objectives, including:

* Mapping the surface of Venus with high-resolution images to better understand its geology and volcanic activity.

* Analyzing the composition of the atmosphere and surface to understand the planet's atmospheric evolution and potential habitability.

* Studying the planet's subsurface with radar to understand its geological history and potential habitability.

* Measuring the planet's magnetic field to understand its interaction with the solar wind.

* Studying the planet's atmosphere and gravitational field with a radio science experiment to understand its dynamics and structure.

These objectives will help scientists better understand the planet Venus and its potential for habitability. Additionally, the mission could have broader implications for our understanding of how planets evolve over time and how they interact with their environments. The EnVision mission is an important step forward in our exploration of the Solar System and our search for life beyond Earth.

The EnVision mission will also build on previous missions to Venus, including the European Space Agency's Venus Express and the Japanese Akatsuki mission. The data collected by EnVision will complement and expand upon the findings of these missions, allowing scientists to build a more comprehensive understanding of the planet. Additionally, the EnVision mission will pave the way for future missions to Venus and other planets in the Solar System, providing important insights and technical advancements for space exploration. Ultimately, the EnVision mission has the potential to revolutionize our understanding of Venus and its place in the Solar System, as well as our search for life beyond Earth.