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Nature's Astronomical Highlights

The journal Nature has been at the pinnacle of scientific publishing for many years. Founded by an astronomer, Norman Lockyer, it has had an extensive history in publishing the most significant developments in the Natural Sciences. For instance, James Chadwick published his discovery of the neutron in Nature; James Watson and Francis Crick presented the helical structure of DNA. Naturally, astronomy has been no exception: part of the discussion following the “Great Debate” on the nature of the Spiral Nebulae (were these small nebulae within our Galaxy or distant galaxies in their own right?) was contained in Nature’s pages in the early 1920s. In the 1960s, Maarten Schmidt’s discovery of the first quasar and Antony Hewish & Jocelyn Bell’s discovery of the first pulsar were presented in Nature. Even up until the present day, Nature is publishing discoveries that not only are of great interest to professional and amateur astronomers and astrophysicists, but also of relevance to humankind in general. In 2016 we discovered through the work of Guillem Anglada-Escudé and collaborators that the nearest star to our Solar System harbours a rocky planet in a temperate orbit.

It is on the back of these discoveries and this extensive history that Nature Research is launching a new journal in 2017, Nature Astronomy, so that more astronomical research might be published with a similar high standard of editing, peer review and production as Nature’s. To celebrate Nature’s comprehensive astronomical heritage, we at Nature Astronomy have curated this Web Collection of 40 Nature papers that have had significant impact on astronomical research. Several of these papers have been cited over 1,000 times in the astronomical literature. To include some more recent papers, which have not had the luxury of many years over which to accrue citations, we have also consulted Altmetric scores, which gauge social media impact among other things. The result is a Collection of Letters, Articles and Reviews that have been roughly grouped into seven themes: exoplanets, pulsars, black holes & short gamma-ray bursts, long gamma-ray bursts & supernovae, galaxies, dark matter and the large-scale structure of the Universe. Several of these papers have been selected for Free Access for a limited period; these can be found collected together below, or in the “Free access” tab, above. 

Before we delve into these seven topics, there is one stimulating paper that stands apart, written by astronomer and science communicator Carl Sagan and his colleagues (Sagan et al. 1993). It details an experiment performed with the Galileo spacecraft on its way to Jupiter. Galileo was commanded to turn towards the Earth, and capture data with its instruments. Effectively it observed the Earth for signs of life. However, it only just managed to find them: it saw a water-rich atmosphere and surface; it saw signs of biological activity in the high levels of methane; it saw a red-absorbing pigment that might have been responsible for photosynthesis; but the only compelling and indicative detection was that of narrow-band radio emission suggestive of a technological civilisation. The paper presented a unique opportunity to objectively observe our blue marble planet from afar.

Free access

1968 saw the first report of a curious class of astronomical radio sources, distinguished by their rapid and extremely regular pulsations. Hewish et al. associated them with unusually stable oscillations in compact stars. They are now understood to be rapidly rotating, magnetized neutron stars, or pulsars.

Article | | Nature

It is often said that nothing can escape from a black hole. But in 1974, Stephen Hawking realized that, owing to quantum effects, black holes should emit particles with a thermal distribution of energies — as if the black hole had a temperature inversely proportional to its mass. In addition to putting black-hole thermodynamics on a firmer footing, this discovery led Hawking to postulate 'black hole explosions', as primordial black holes end their lives in an accelerating release of energy.

Letter | | Nature

The ΛCDM or Lambda-CDM model has been regarded as the standard model of cosmology for decade or so, as it explains many of the most important observations. The model assumes that the 95% of mass and energy of the Universe not accounted for in the visible Universe is present as dark energy (Λ) and cold dark matter (CDM). Where it does fall down, though, is in its apparent inability to explain the low-density 'cores' of dark matter measured at the centres of galaxies. Historically, the effects of normal matter on the dark matter have been ignored. In this review, Andrew Pontzen and Fabio Governato point to recent work that shows how gas and stars can significantly alter the effect of CDM through a coupling based on rapid gravitational potential fluctuations.

Review Article | | Nature

Established cosmological models of galaxy formation and evolution have achieved limited success, failing to create the mixed population of elliptical and spiral galaxies that we observe. A new simulation that makes full use of the latest advances in computing power and algorithmic developments successfully recreates a population of ellipticals and spirals, reproduces the observed distribution of galaxies in clusters, the evolution of dark and visible matter and the characteristics of hydrogen on large scales, at the same time matching the metal (heavier than helium) and hydrogen content of galaxies on small scales. The calculation tracks the build-up of galaxies at unprecedented precision from shortly after the Big Bang until the present day, spanning more than 13 billion years of cosmic evolution.

Article | | Nature

In the early 1960s, astronomers were puzzled by quasars — sources of intense radio emission that seemed to be stars, but had unintelligible optical spectra. In 1963, Maarten Schmidt solved the puzzle by recognizing the Balmer lines of hydrogen, strongly redshifted, in the spectrum of the quasar 3C 273. Schmidt reached the "most direct and least objectionable" conclusion, that 3C 273 was no star, but the enormously bright nucleus of a distant galaxy.

Article | | Nature