Tag Archives: express

Mars Express orbit Credit: ESA

Keeping MEX warm

Details, register to attend or watch live: Mars Express - Open Data Day 28 October 2016

Tracking a ghost mission 238 million km away

Basically, Venus Express is ghosting along in its orbit, with the pericentre height (height of closest altitude above the surface) during each orbit steadily decaying due to gravity and natural perturbations.

Artist's impression of Venus Express Credit: ESA (Image by AOES Medialab)

Venus Express anomaly

On 28 November 2014, the flight control team at ESOC reported lack of contact with Venus Express at the first opportunity for communication with a ground station after execution of the 6th of the pericentre-raising manoeuvres.

Venus Express arrives at Venus

Venus Express will raise orbit and keep going

Between 23-30 November, the operations team at ESOC will conduct manoeuvres to raise the pericentre of the Venus Express (VEX) orbit again, in an effort to keep the spacecraft in productive orbit around Venus.

VEX pericentre evolution aerobraking 3 July 2014. Credit: ESA

Venus Express goes even lower

Update contributed by the VEX team – Ed. Here’s the latest plot showing the lowest altitudes reached by Venus Express on each of its aerobraking orbits. Yesterday morning, 2 July, the spacecraft performed another manoeuvre designed to lower...

Colin Wilson

Hotter and hotter

In the past ten days, we saw the acceleration felt by the spacecraft as it dips into the atmosphere. However, it’s not these accelerations which threaten the spacecraft – instead, it’s the heating of the spacecraft which...

Evolution of pericentre passage as of 23 June. Credit: ESA

Venus Express enters an unknown realm

Operations team lowers altitude of pericentre passage Today’s blog post was contributed by Colin Wilson at the Dept. of Atmospheric, Oceanic and Planetary Physics, Oxford University, with inputs from the operations team at ESOC. Colin is Venus...

This chart shows the planned evolution of the Venus Express pericentre (point of closest approach to surface) altitude during the aerobraking campaign. Units: km. Credit: ESA

Aerobraking starts today – Update 17:00CEST

UPDATE 17:00CEST Adam writes: Since the atmosphere is not as dense as was feared, we are planning a small manoeuvre next week to further lower the pericentre altitude by between 2 and 3 km. This combined with...