US F/A-18 footage of a UFO (circled in red).
Creative Commons Attribution-Share Alike 4.0 International license.
About 5 percent of all UFO sightings cannot be easily explained by weather or human technology. A physicist argues that there's compelling evidence to justify serious scientific study and that the skeptics should step aside – for the sake of humanity.
The things you can do with an amaterur telescope.
With a little bit of knowledge and a few pieces of equipment you too can look at the night sky and see it as a cosmologist does.
Galaxy cluster MACS J1149.5+2223 taken with the Hubble Space Telescope. The inset image is the very distant galaxy MACS1149-JD1.
ALMA (ESO/NAOJ/NRAO), NASA/ESA Hubble Space Telescope, W. Zheng (JHU), M. Postman (STScI), the CLASH Team, Hashimoto et al.
Astronomers have indirectly spotted some of the first stars in the universe by making their most distant detection of oxygen in a galaxy that existed just 500m years after the Big Bang.
TESS will soon be our eye in the sky.
NASA's Goddard Space Flight Center
How long before we find a planet just like our own?
Imagined view from Kepler-10b, a planet that orbits one of the 150,000 stars that the Kepler spacecraft is monitoring.
NASA/Kepler Mission/Dana Berry
When NASA first started planning the Kepler mission, no one knew if the universe held any planets outside our solar system. Thousands of exoplanets later, the search enters a new phase.
The Small Magellanic Cloud galaxy here seen in infrared light, but it looks different when viewed at other wavelengths.
The galaxies, stars and planets in our universe can look very different when you view them through equipment that sees beyond the visible light our eyes can see.
An image by MeerKAT shows hydrogen gas in M83, a famous spiral galaxy.
A precursor to the Square Kilometre Array- the MeerKAT telescope - is being built right now and remarkable progress has been made in the last 12 months.
Supercomputer simulation of a pair of neutron stars colliding.
NASA/AEI/ZIB/M. Koppitz and L. Rezzolla
A LIGO team member describes how the detection of a gravitational wave from a new source – merging neutron stars – vaults astronomy into a new era of 'multi-messenger' observations.
This enhanced-color image of Jupiter’s south pole and its swirling atmosphere was created by citizen scientist Roman Tkachenko using data from the JunoCam imager on NASA’s Juno spacecraft.
We may need to re-think our models of Jupiter’s formation thanks to the first results from Juno probe orbiting the planet, and new observations from Earth.
ESO provides new ways to access the southern sky for Australian astronomy.
ESO/José Francisco Salgado
Australia's new partnership with the European Southern Observatory will give our astronomers access to much bigger telescopes.
Part of CSIRO’s ASKAP antennas at the Murchison Radio-astronomy Observatory (MRO) in Western Australia.
Australian SKA Office/WA Department of Commerce
It's almost impossible for any human to spot something unknown or unusual in the massive amount of data collected by our telescopes. So we're teaching an intelligent machine to search the data for us.
Light from the universe’s first galaxies destroyed the hydrogen atoms that formed during the Big Bang.
NASA, ESA, R. Ellis (Caltech), and the UDF 2012 Team
A new telescope aims to figure out what became of the universe's original atoms once the first stars began to shine.
SKA South Africa
What's particularly exciting about "first light" images from South Africa's MeerKAT radio telescope is that they prove Africa is a rising star in the world of astronomy.
Jupiter and its moon Io really do look like they do in this latest image by NASA’s Juno probe.
Many images of planets have been manipulated. So have we seen their true colours? Not always, it turns out. But Jupiter's red spot really is red.
Artist’s concept of the supermassive black hole and the gas clouds surrounding it.
NRAO/AUI/NSF; Dana Berry / SkyWorks; ALMA (ESO/NAOJ/NRAO)
Astronomers have detected clumpy gas clouds on the verge of being swallowed by a supermassive black hole, rushing towards it at over 537,000 miles an hour.
Windy black hole.
It was a rare and brief event, but powerful telescopes helped scientists get a glimpse of a black hole letting out a wind at 3,000km per second.
All is not calm in the cosmos.
ESA/Hubble and NASA
Stargazing seems such a quiet, calm activity. But whether our eyes can see or not, those stars out there are in constant flux. Time-domain astronomy studies how cosmic objects change with time.
An artist’s impression of the ASTRO-H telescope.
The universe looks very different with X-ray vision, revealing some of the most energetic interactions in our galaxy. Japan's new Hitomi telescope will help us see these wonders.
Artist’s impression of the Square Kilometre Array.
SKA Project Development Office and Swinburne Astronomy Productions/wikimedia
Dark energy is a completely unknown source making up 70% of the universe. Will any of the new projects designed to find out what it is succeed?
20 tons of Ohara E6 borosilicate glass being loaded onto the mold of one of the GMT’s mirrors.
Ray Bertram, Steward Observatory
The laws of physics dictate that to pick out ever fainter objects from space and see them more sharply, we're going to need a bigger telescope. And that means we need massive mirrors.