The JUICE (Jupiter Icy Moons Explorer) mission by the European Space Agency (ESA) aims to explore Jupiter and its icy moons. It was launched on 14 April 2023 and is expected to reach Jupiter in July 2031. JUICE's primary objective is to study three of Jupiter's largest moons: Ganymede, Callisto, and Europa. The mission aims to investigate the moons' potential for supporting life by studying their subsurface oceans, geology, and atmospheres. JUICE will also examine the interaction between the moons and Jupiter's powerful magnetosphere. The spacecraft will conduct remote sensing observations, including high-resolution imaging, radar sounding, and spectral analysis. Of particular importance are three magnetometers, which were calibrated and tested within the [Merritt coil system] at the Conrad Observatory of GeoSphere Austria. One of these magnetometers was developed and constructed by IWF and TU Graz. The mission will provide valuable insights into the formation and evolution of Jupiter's icy moons, their potential habitability, and their connection to the overall understanding of our solar system.
Estimated arrival in:
A coil system with 3 meter high coils is located at the Conrad Observatory and used for calibration of highly sensitive magnetic field measuring devices, which will later carry out important analyzes in space. Magnetometers for the JUICE project were tested in this coil system, which was set up jointly by the ÖAW and ZAMG. JUICE (JUpiter ICy moon Explorer) is the first mission of the European Space Agency ESA to the outer solar system. In particular, the three largest moons of Jupiter are examined: Callisto, Europa and Ganymede. The launch is planned for 2023.
Even in the days of Isaac Newton, it was believed that gravity was reserved for astronomical objects such as planets. It was only through the work of Cavendish (and Nevil Maskelyne before him) that it was possible to show that objects on earth also produce their own gravity. In 1797, using an elegant pendulum device, Cavendish was able to measure the gravitational force generated by a 30 cm long and 160 kg heavy lead ball. A so-called torsion pendulum -- two masses at the ends of a rod that is suspended from a thin wire and can rotate freely -- is measurably deflected by the gravitational force of the lead mass. Over the coming centuries, these experiments were further perfected to measure gravitational forces with increasing accuracy.
This idea is taken up here and a miniature version of the Cavendish experiment was set up.
The term "space weather" generally refers to the state of the near-Earth space
environment and Earth's upper atmosphere. Space weather is mainly determined by the
activity on the Sun and the relevant phenomena are often called solar storms. The
interaction between charged particle clouds in the solar wind and the geomagnetic field
leads to geomagnetic storms.
Space weather can affect technological systems on the earth's surface during extreme
events, in which large clouds of charged particles leave the Sun as plasma.
Variations of the Earth’s magnetic field in space and time cover a wide range of magnitudes. Strong changes of the geomagnetic field intensity on decadal to centennial timescales originating from the Earth’s outer core are of crucial importance for infrastructures and living organisms because they affect the shielding strength against energetic cosmic particles. Within the FWF project “Filling critical archeomagnetic data gaps” (P 36496), two periods characterized by extraordinarily strong field intensity variations will be investigated with new records from Central Europe.
Investigating the occurence, morphology and consequences of geomagnetic field reversals is the primary goal of this project. Within the framwork of an FWF proposal (P30523-N29) we aimed on identification and sampling transitional geomagnetic field information at three sites: in Styria (Austria), São Nicolau (Cabo Verde) and St. Helena.