After a five long years NASA’s unmanned juno spacecraft finally enters Jupiter orbit. The spacecraft travelled a whooping 2.8bn kilometers. this is the second spacecraft that has entered Jupiters orbit after Galileo. Scientists have estimated that juno will be more closer than the earlier by 5,000 kilometers. Juno was launched from Cape Canaveral Air Force Station on August 5, 2011 and arrived on July 4, 2016.
it cost the mission 1.1$ bn.
Juno is a NASA New Frontiers mission currently orbiting the planet Jupiter. Juno was launched from Cape Canaveral Air Force Station on August 5, 2011 and arrived on July 5, 2016.
“Independence Day always is something to celebrate, but today we can add to America’s birthday another reason to cheer – Juno is at Jupiter,” said NASA Administrator Charlie Bolden. “And what is more American than a NASA mission going boldly where no spacecraft has gone before? With Juno, we will investigate the unknowns of Jupiter’s massive radiation belts to delve deep into not only the planet’s interior, but into how Jupiter was born and how our entire solar system evolved.”
The spacecraft’s name comes from Greco-Roman mythology. The god Jupiter drew a veil of clouds around
himself to hide his mischief, but his wife, the goddess Juno, was able to peer through the clouds and see Jupiter’s true nature.
Aims and objectives
Launched: Aug. 5, 2011
Arrival at Jupiter: July 4, 2016
Goal: Understand origin and evolution of Jupiter, look for solid planetary core, map magnetic field, measure water and ammonia in deep atmosphere, observe auroras.
- Determine the ratio of oxygen to hydrogen, effectively measuring the abundance of water in Jupiter, which will help distinguish among prevailing theories linking Jupiter’s formation to the Solar System.
- Obtain a better estimate of Jupiter’s core mass, which will also help distinguish among prevailing theories linking Jupiter’s formation to the Solar System.
- Characterize and explore the three-dimensional structure of Jupiter’s polar magnetosphere and its auroras.
- Map the variation in atmospheric composition, temperature, structure, cloud opacity and dynamics to pressures far greater than 100 bars (10 MPa; 1450 pound/sq inch) at all latitudes.
Google Doodles on Juno
Jupiter: Into the Unknown (NASA Juno Mission Trailer)