Many galaxies are too faint or small for us to observe easily – but science can help us work it out.
The Milky Way above a single MeerKAT antenna in the Northern Cape Province of South Africa. Inset: EHT image of the Milky Way black hole.
Sagittarius A* lies in the southern sky, passing directly above South Africa.
Artist’s impression of the PSR J0523-7125 in the Large Magellanic Cloud.
Carl Knox, ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav)
The pulsar PSR J0523-7125 is more than ten times brighter than any other radio pulsar outside the Milky Way.
A composite image of the data collected by the ALMA telescope in Chile, showing spiral galaxies in the Virgo Cluster.
ALMA (ESO/NAOJ/NRAO)/S. Dagnello (NRAO)/T. Brown (VERTICO)
Studying the extreme environment of the Virgo Cluster — which comprises thousands of galaxies — helps us learn what factors can affect and start or stop star formation.
After six decades during which it tracked lunar missions, spotted distant pulsars and quasars, and even expanded our concept of the size of the Universe, the Parkes telescope is still going strong.
Bruno Gilli/ESO/Wiki Commons
The sky on other planets doesn’t look the same as the sky on Earth does. And that’s because of the different gases in Earth’s atmosphere.
Sebastian Zentilomo/University of Sydney
Fluctuating radio waves that appear to come from near the heart of the Milky Way are a new puzzle for astronomers.
Astronomers have found a way to estimate the number of stars in the universe.
Comstock Images via Getty Images
Scientists have a good estimate on the staggering number of stars in the universe.
The James Webb Space Telescope is the biggest orbital telescope ever built and is scheduled to be launched into space on Dec. 18, 2021.
The largest orbital telescope ever made will allow astronomers to study the atmospheres of alien planets, learn about how stars form in the Milky Way and peer into the farthest reaches of the universe.
MeerKAT, the precursor to the massive Square Kilometre Array, allows astronomers to gather huge amounts of data about galaxies.
Photo by Jaco Marais/Foto24/Gallo Images/Getty Images
Technology is allowing astronomers to study and analyse galaxies in far more detail than was previously possible.
Event Horizon Telescope project/Nature Astronomy
Astronomers have taken a close-up look at the jets of plasma streaking away from a supermassive black hole - one of the strangest and most energetic features of galaxies.
Artist illustration of an exoplanet.
dottedhippo/iStock via Getty Images
Billions of galaxies are in the universe, with billions of stars in every galaxy. Could billions of planets be out there too?
A galaxy 320 million light-years away has a surprisingly similar structure to the Milky Way, suggesting our galaxy isn’t as unique as it once seemed to astronomers.
Thanks to the discovery of five twinkling galaxies in a rare alignment, astronomers have been able to calculate — for the first time — the properties and geometry of an invisible gas cloud in space.
Dr Natasha Hurley-Walker (Curtin / ICRAR) and The GLEAM Team
Some of the baby radio galaxies found may not be ‘babies’ at all. Rather, they may be ‘angsty teens’, rapidly growing into adults much faster than researchers had anticipated.
The two giant radio galaxies found with the MeerKAT telescope. In the background is the sky as seen in optical light. Overlaid in red is the radio light from the enormous radio galaxies, as seen by MeerKAT.
I. Heywood (Oxford/Rhodes/SARAO)
Based on what we currently know about the density of giant radio galaxies in the sky, the probability of finding two of them in this region is extremely small.
An artist’s impression of a gravitational micro-lensing event by a free-floating planet.
JanSkowron/Astronomical Observatory, University of Warsaw.
Not all planets orbit stars. Rogues float through the galaxy in darkness and are almost impossible to see.
Artist’s conception of the Milky Way galaxy, which should contain dark matter haloes.
A new method suggests we should aim to detect dark matter haloes by tracing galactic gas.
ESO/Callingham et al.
Surprising findings on an exquisite and huge star system in our Milky Way suggest future potential for an extremely rare gamma-ray burst. This event has never been observed in our galaxy.
Towns and cities create an orange glow on the horizon at night. It’s so widespread that it even disturbs sea creatures.