Abstract
Progress in (extragalactic) astronomy is achieved through information obtained from increasingly improving instruments and by refining our theoretical understanding of astrophysical processes, which in turn is driven by observational results. It is easy to foresee that the evolution of instrumental capabilities will continue rapidly in the near future, enabling us to perform better and more detailed studies of cosmic sources. Before we will mention some of the forthcoming astronomical facilities, it should be pointed out that some of the recently started projects have at best skimmed the cream, and the bulk of the results is yet to come.
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Notes
- 1.
The total price tag on the HST project will probably be on the order of 10 billion US dollars. This is comparable to the total cost of the Large Hadron Collider and its detectors. I am convinced that a particle physicist and an astrophysicist can argue for hours which of the two investments is more valuable for science—but how to compare the detection of the Higgs boson with the manifold discoveries of HST! However, both, the particle physicist and the astrophysicist, easily agree that the two price tags are a bargain, when compared to an estimated cost of 45 billion US dollar for the B2 stealth bomber program.
- 2.
However, there has been a fairly recent increase in research activity on MOND. This was triggered mainly by the fact that after many years of research, a theory called TeVeS (for Tensor-Vector-Scalar field) was invented, containing General Relativity, MOND and Newton’s law in the respective limits—though at the cost of introducing three new arbitrary functions.
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Schneider, P. (2015). Outlook. In: Extragalactic Astronomy and Cosmology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-54083-7_11
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DOI: https://doi.org/10.1007/978-3-642-54083-7_11
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