Two of Galaxy Zoo’s founders, Chris Lintott, from the Department of Physics at the University of Oxford, and Kate Land reflect on the project’s success in September’s Physics World.
While there has been a range of computer programs that make use of the idle time of users’ PCs to churn through scientific data, like ClimatePrediction.net for modelling global warming, Galaxy Zoo was the first of its kind to engage computer users and ask them to apply their own brain power to help sort one type of galaxy from another.
With almost a million galaxy images provided by the robotic Sloan Digital Sky Survey telescope in New Mexico, the Galaxy Zoo team knew it was a tall order. However, even on the day of launch after a small news item on Radio 4’s Today programme, the site was receiving more than 70,000 classifications each hour.
As Lintott and Land write, “An attractive feature of the project was that these galaxies had literally never been looked at before with the human eye – so people really felt that they were helping with original and unique contributions.”
The original impetus for the project was a research dilemma that required a complete reassessment of 50,000 images. Existing criteria used to define elliptical galaxies – colour, density profile and spectral features – appeared to leave out a small fraction of important elliptical galaxies that were undergoing star formation.
The 150,000 amateur astronomers have helped make more than 50 million classifications, thereby helping the researchers obtain a good statistical error for each one. For about a third of the 900,000 galaxies, more than 80 per cent agreed on the morphology which gave the researchers an astoundingly good starting point.
Advances in our understanding of the universe have already been made and a selection of journal articles has already been published. The researchers are now developing Galaxy Zoo to make a more detailed classification of a smaller set of galaxies plus a deliberate search for more unusual objects.
The founders write, “As we develop the citizen science that powers Galaxy Zoo, we can expect many new discoveries to follow. After all, having 150,000 co-authors is an excellent motivator when it comes to writing papers.”
Also in this issue:
•Ugo Amaldi, son of Italian physicist Edoardo Amaldi, reflects on his father’s remarkable scientific life in particle physics, nuclear physics and gravitational-wave research, as well as his key role in setting up CERN and the European Space Agency.
•The discovery of iron-based high-temperature superconductors has prompted a huge surge of interest in these new materials and rekindled the dream of room-temperature superconductivity.
Move over, lasers: Scientists can now create holograms from neutrons, too
21.10.2016 | National Institute of Standards and Technology (NIST)
Finding the lightest superdeformed triaxial atomic nucleus
20.10.2016 | The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
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21.10.2016 | Health and Medicine
21.10.2016 | Information Technology
21.10.2016 | Materials Sciences