Powerful winds detected in Jupiter’s stratosphere with ALMA

You can find the press release from ESO (European Southern Observatory) about our most recent results on Jupiter’s stratosphere, where we have detected directly and for the first time strong equatorial and auroral jets:


The paper, which was published today in Astronomy and Astrophysics can be freely downloaded at:


Wind velocities in Jupiter’s stratosphere, as observed with ALMA on March 22nd, 2017. Jupiter image from Christopher Go (the same day the ALMA data were taken), UV emission model from Vincent Hue and Bertrand Bonfond, ALMA observatory taken by myself.

Back to I93 and detection of a potentially hazardeous asteroid (July 2020)

My last observations at the I93 observatory of my friend Florent Losse dated back to 2017… On July 19th, and despite skies that were not so clear, we detected 3 asteroids. One of them is a PHA (Potentially Hazardeous Asteroid). Here are the animations showing the asteroids:

2020OM1, that’s the PHA

And here are the links to the Minor Planet Center circulars:

MPEC 2020-O50 : 2020 OF1
MPEC 2020-O52 : 2020 OH1
MPEC 2020-O56 : 2020 OM1