Carpe diem: Europe must make a genuine space policy now

This article examines the current effort to establish a ‘European space policy’. The authors place this effort in the context of the experience of the 2003 Green and White Papers, the subsequent stalling of the Constitutional Treaty for the EU, and reductions in the EU's financial perspectives. They argue that, despite post-referenda malaise and systemic inertia on the part of several member states, adoption of a space policy is long overdue and should not merely seek to rearrange what is already there or expose yet again what is being done. A full-blooded policy setting in train fundamental change is needed, justifying a political decision at the level of the European Council. The article then offers criteria such a policy should fulfil as well as items the authors view as essential content. They briefly explore issues which could become stumbling blocks but which can be accommodated within the kind of policy this article advocates.     

Biogenicity of morphologically diverse carbonaceous microstructures from the ca. 3400 Ma Strelley pool formation, in the Pilbara Craton, Western Australia

Morphologically diverse structures that may constitute organic microfossils are reported from three remote and widely separated localities assigned to the ca. 3400?Ma Strelley Pool Formation in the Pilbara Craton, Western Australia. These localities include the Panorama, Warralong, and Goldsworthy greenstone belts. From the Panorama greenstone belt, large (> 40?μm) lenticular to spindle-like structures, spheroidal structures, and mat-forming thread-like structures are found. Similar assemblages of carbonaceous structures have been identified from the Warralong and Goldsworthy greenstone belts, though these assemblages lack the thread-like structures but contain film-like structures. All structures are syngenetic with their host sedimentary black chert, which is associated with stromatolites and evaporites. The host chert is considered to have been deposited in a shallow water environment. Rigorous assessment of biogenicity (considering composition, size range, abundance, taphonomic features, and spatial distributions) suggests that cluster-forming small (<15 μm) spheroids, lenticular to spindle-like structures, and film-like structures with small spheroids are probable microfossils. Thread-like structures are more likely fossilized fibrils of biofilm, rather than microfossils. The biogenicity of solitary large (>15?μm) spheroids and simple film-like structures is less certain. Although further investigations are required to confirm the biogenicity of carbonaceous structures from the Strelley Pool Formation, this study presents evidence for the existence of morphologically complex and large microfossils at 3400?Ma in the Pilbara Craton, which can be correlated to the contemporaneous, possible microfossils reported from South Africa. Although there is still much to be learned, they should provide us with new insights into the early evolution of life and shallow water ecosystems.     

Comment – on ‘Analysis of Petschek-Type Reconnection in Non-Uniform Field and Flow Geometries’, by Michael T. Kiendl,Vladimir S. Semenov,Igor V. Kubyshkin,Helfried K. Biernat,Richard P. Rijnbeek,and Bruno P. Besser

Space Science Reviews -