Most asteroid masses are low, although present-day observations show that the asteroids measurably perturb the orbits of the major planets.
More recently, Goran Hugo Olsson's The Black Power Mixtape 1967-75 (2011), offered a stylish marriage of newsreel footage plundered from Swedish archives and present-day observations from the likes of Seale and poet Sonia Sanchez.
One implication is that we can't actually estimate long-term warming from present-day observations unless we take into account how the pattern of ocean heat uptake might change with time". And change it will.
For both the power-law and lognormal initial clusters mass functions, we can find the best-fit models which can match the present-day observations with their main features of the mass function almost unchanged after evolution of several Gyr.
Forward modelling also allows the integration of data from conventional data sets with data from present-day observations and seismic geometries, promoting a transition from a qualitative to a semi-quantitative/quantitative sedimentological approach.
The present-day observations of the ocean (done by satellites, ships and robotic instruments) have large gaps between them, in space and in time.
Although there are many present-day observations of the cessation of subduction zones due to the collision of the trench with, e.g. positively buoyant continents, oceanic plateaus, magmatic arcs or ridges (e.g. Isacks and Molnar 1969), there is less evidence of recent subduction initiation.
Such a grid may be detectable via present-day astrophysical observations --- specifically in observed energy limitations of ultra high-energy cosmic rays (UHECRs) as well as how such cosmic rays are spatially distributed on the sky.
To be clear, the kind of research required to understand how the LUJO virus works makes use of present-day, real-time experiment and observation.
However, a significant minority of Darwinian scientists, the more prominent being the co-discoverer of natural selection Alfred Russel Wallace (1823 1913) and the physician Henry Charlton Bastian (1837 1915) (Strick 2000, 2009), still thought that a full-fledged evolutionary theory required the observation of present-day spontaneous generations as proof of a natural origin of life.
The hunt for the identity of dark matter continues with undiminished strength, even though the most popular candidate during recent decades, the Weakly Interacting Massive Particle (WIMP), is facing pressure from non-observation in present-day experiments.
