Kakadu National Park looks likely to escape a threatened gold rush following
the release last week of a report on the impact of a proposed mine in the
park. The government will decide early next month whether to allow mining
for gold, platinum and palladium at Coronation Hill. The issue has been
viewed as a show of strength between mining and environmental interests
(see ‘Gold rush threatens Australia’s green dreams’, New Scientist, 27 April).
The report from the Resource Assessment Commission (RAC), an inquiry
appointed by the government, declared that the mine would have limited economic
benefit and that it would be against the wishes of the Aboriginal people
who live in the area. The belief in Bula, a sacred figure that Aborigines
say will bring disaster to the area if disturbed, was not something that
had been invented after mineral exploration had begun, the commission said.
The report warns that a decision in favour of mining could be seen as
another case of Australian governments putting money ahead of Aboriginal
concerns. The commission played down the environmental consequences of a
mine. The impact on known biological resources around Coronation Hill would
be small if a single mine was properly managed and monitored. But mining
at Coronation Hill would be seen by some as ‘inconsistent with national
and international concepts of national parks’.
The Prime Minister, Bob Hawke, in a remark widely interpreted as softening
up the mining industry for a ‘no vote’, last week told the Australian Mining
Industry Council not to view Coronation Hill as a litmus test for mining
in Australia. Mining companies claim that investors will be driven overseas
if the decision goes against mining. Environmentalists accuse the companies
of using scare tactics.
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John Quinn, managing director of Newcrest Mining, the company that wants
to mine the area, says that the RAC’s investigation was a waste of time
and that the commission should be abolished.
![Astronomers have long known that understanding how star clusters come to be is key to unlocking other secrets of galactic evolution. Stars form in clusters, created when clouds of gas collapse under gravity. As more and more stars are born in a collapsing cloud, strong stellar winds, harsh ultraviolet radiation and the supernova explosions of massive stars eventually disperse the cloud, and their light can bear down on other star-forming regions in the galaxy. This process is called stellar feedback, and it means that most of the gas in a galaxy never gets used for star formation. Researching how star clusters develop can answer questions about star formation at a galactic scale. Now, the state of the art has been further developed with both Hubble and Webb working together to provide a broad-spectrum view of thousands of young star clusters. An international team of astronomers has pored over images of four nearby galaxies from the FEAST observing programme (#1783), trying to solve this mystery. Their results show that it is the most massive star clusters that clear away their gaseous shroud the fastest, and begin lighting their galaxy the earliest. The team identified nearly 9000 star clusters in the four galaxies in different evolutionary stages: young clusters just starting to emerge from their natal clouds of gas, clusters that had partially dispersed the gas (both from Webb images), and fully unobstructed clusters visible in optical light (found in Hubble images). With Webb???s ability to peer inside the gas clouds, they were able to then estimate the mass and age of each cluster from its light spectrum. This image shows a section of one of the spiral arms of Messier 51 (M51), one of the four galaxies studied in this work, as seen by Webb???s Near-Infrared Camera (NIRCam). The thick clumps of star-forming gas are shown here in red and orange, representing infrared light emitted by ionised gas, dust grains, and complex molecules such as polycyclic aromatic hydrocarbons (PAHs). Within these gas complexes, each tens or hundreds of light years across, Webb reveals the dense, extremely bright clusters of massive stars that have just recently formed. The countless stars strewn across the arm of the galaxy, many of which would be invisible to our eyes behind layers of dust, are also laid bare in infrared light. [Image description: A large, long portion of one of the spiral arms in galaxy M51. Red-orange, clumpy filaments of gas and dust that stretch in a chain from left to right comprise the arm. Shining cyan bubbles light up parts of the gas clouds from within, and gaps expose bright star clusters in these bubbles as glowing white dots. The whole image is dotted with small stars. A faint blue glow around the arm colours the otherwise dark background.]](https://images.newscientist.com/wp-content/uploads/2026/05/13114322/SEI_296271016.jpg)


