NASA’s InSight mission to study the deep interior of Mars blasted off to the Red Planet on Saturday aboard a United Launch Alliance (ULA) Atlas V rocket from California’s Vandenberg Air Force Base.
“Humanity’s next mission to Mars has left the pad! NASAInSight heads into space for an approximately six-month journey to Mars where it will take the planet’s vital signs and help us understand how rocky planets formed,” NASA tweeted soon after the launch at 7.05 am (4.35 p.m. India time).
InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, will study the deep interior of Mars to learn how all rocky planets formed, including Earth and its Moon. The lander’s instruments include a seismometer to detect marsquakes, and a probe that will monitor the flow of heat from the planet’s interior.
InSight will be the first mission to peer deep beneath the Martian surface, studying the planet’s interior by measuring its heat output and listening for marsquakes, which are seismic events similar to earthquakes on Earth.
Using data from NASA’s MAVEN spacecraft, researchers have created the first-ever map of wind circulation in the upper atmosphere of Mars.
The new map of Mars winds helps scientists to better understand the workings of the Martian climate, giving them a more accurate picture of its ancient past and its ongoing evolution.
“The observed global circulation provides critical inputs needed to constrain global atmospheric models,” said Mehdi Benna of NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
“These are the same models that are used to extrapolate the state of the Martian climate into the distant past,” added Benna in the first paper published in the journal Science.
MAVEN (Mars Atmosphere and Volatile EvolutioN mission) celebrated the five-year anniversary of its entrance into orbit around Mars on September 21.
The primary scientific goal of the mission is to study what is left of Mars’ atmosphere to determine how, in the distant past, an ocean-covered and potentially habitable Mars became the dry and desolate place it is today.
“The winds observed in the Martian upper atmosphere are sometimes similar to what we see in global model simulations, but other times can be quite different,” said Kali Roeten of University of Michigan.
“These winds can also be highly variable on the timescale of hours, yet in other cases, are consistent throughout the observation period, said Roeten in the second paper published in the Journal of Geophysical Research-Planets.
Upper atmospheric winds on Earth have already been mapped in detail.
Winds drive a series of processes in the atmosphere that can affect the propagation of radio waves, which are crucial for communications purposes for those on the surface, and the prediction of paths satellites will take in their orbit around Earth.
Mapping Martian winds, therefore, is a crucial step towards understanding characteristics of extraterrestrial atmospheres beyond what we know about processes on Earth.