Space News & Blog Articles

The connection between greenhouse gases and space weather might seem surprising, but it illustrates just how interconnected Earth's atmospheric layers really are. While carbon dioxide warms the lower atmosphere by trapping heat, it has the opposite effect in the thin regions of the upper atmosphere, roughly 300-400 miles above Earth's surface. At these extreme altitudes, carbon dioxide actually cools the atmosphere by radiating heat directly into space, causing the air to become significantly less dense over time.

The Event Horizon Telescope (EHT) established a reputation worldwide in 2019 when it released the first-ever image of a black hole. This was made possible by the science of Very Long Baseline Interferometry (VLBI), a technique in which multiple instruments collect light to create a complete picture of what an object looks like. In this case, the image was of the supermassive black hole (SMBH) at the center of Messier 87, a massive galaxy 55 million light-years from Earth. This was followed by images of the relativistic jets emanating from two bright galaxies, and of Sagitarius A*, the SMBH at the center of the Milky Way.

Our Moon is a seismically active world with a long history of quakes stretching back to its early history. It turns out those quakes can and will affect the safety of permanent base structures for anybody planning to explore and inhabit the Moon. That's one conclusion from a study of quakes along the Lee-Lincoln fault in the Taurus-Littrow valley where the Apollo 17 astronauts landed in 1972. “The global distribution of young thrust faults like the Lee-Lincoln fault, their potential to be still active and the potential to form new thrust faults from ongoing contraction should be considered when planning the location and assessing stability of permanent outposts on the Moon,” said Smithsonian senior scientist emeritus Thomas R. Watters, lead author of the paper.

The James Webb Space Telescope has revealed many wonders of the early universe, but few discoveries have puzzled astronomers more than some mysterious "little red dots." These tiny, brilliant galaxies appear scattered across deep space images like cosmic breadcrumbs, challenging everything scientists thought they knew about how galaxies formed in the early universe.

When global events set our minds to wondering if humanity has what it takes to persist, it's natural to wonder about other worlds, other life, other intelligent species, and if those others might be better suited to survive whatever Great Filters they face. Those are fanciful thoughts, but there's an underpinning of nuts-and-bolts thinking to them. It starts with identifying which planets in habitable zones around other stars might actually be habitable.

Mars still holds the promise of being one of the first places in the solar system humanity will colonize. However, if there was evolutionarily distinct, extant life on the planet, it might sway the heart of even the most ardent Mars colonization fans. So astrobiologists are in a race against time to try to determine whether or not such life exists, before the entire planet becomes an analogue of the Earth’s biosphere, if only unintentionally, and only a shadow of the ones that exists here. A new paper from the Christopher Temby and Jan Spacek of the Agnostic Life Finder (ALF) team discusses one of the most promising ways to prove definitively that life exists on the Red Planet - finding polyelectrolyte polymers - in other words, DNA.

Astronomers are confident that the Milky Way and Andromeda galaxies will collide, merge, or at least interact with one another in the next few billion years. What will that merger look like? Both galaxies have dwarf galaxies, and astronomers want to know if their behaviour can predict the future of the merger.

Black holes appear stranger and more bewildering the more deeply scientists study them. They display complex characteristics that defy simple explanations. One such characteristic is the vibrations they emit when perturbed.

Any material used as a light sail is bound by very restrictive physical requirements. It has to be extremely light , can’t melt from the energy applied to it, and must bend, but not break, from that pressure. Various research groups around the world have been working on materials they believe will meet those requirements, and a new paper from researchers at the University of Pennsylvania describes experimental testing of what they believe to be the most functional light sail material yet developed.

The numbers paint a stark picture of our orbital traffic problem. More than 11,000 active satellites currently circle Earth, with thousands more planned for launch in coming years. Even more concerning are the over 1.2 million pieces of space debris larger than one centimetre hurtling through space at incredible speeds. At those velocities, even a paint chip can damage a spacecraft, while larger debris can destroy entire satellites.

A recent discovery by a team of astronomers centres on a galaxy cluster called CHIPS 1911+4455, located an incredible 6 billion light-years from Earth. At its heart lies a supermassive black hole that has only recently "turned on”, just a thousand years ago. While that might sound like a long time, it's merely a blink of an eye in astronomical terms.

All large galaxies are thought to host supermassive black holes (SMBH). When the black holes are actively accreting material and emitting radiation, astrophysicists call them active galactic nuclei (AGN). Some AGN emit relativistic jets, streams of ionized matter moving at near the speed of light. When those powerful jets are pointed at us, we call them blazars.

A team of scientists have made a discovery that could help solve one of Earth's greatest mysteries, where did our planet's water come from? Using powerful radio telescopes, the researchers have detected water vapour in a comet located far beyond Neptune's orbit, and the results are changing our understanding of how life sustaining water arrived on our world.

Lava planets are some of Nature's most perplexing objects. Though they're rocky, they're locked in orbits so tight to their stars that they're molten. Scientists think that these planets are almost certainly tidally locked to their stars, meaning that their daysides always face their stars, while their nightsides never do. As a result, a lava planet's dayside may be molten while its nightside may not be.

For decades, astronomers have searched for signs of extraterrestrial intelligence using radio telescopes and optical instruments, scanning the skies for artificial signals. Now, researchers are taking a different approach, this time looking much closer to home for alien artefacts that might already be in our Solar System.

Astronomers at the Pan-STARRS Observatory in Hawaii made history in 2017 when they detected 'Oumuamua, the first interstellar object (ISO) ever observed. Two years later, the interstellar comet 2I/Borisov became the second ISO ever observed. And on July 1st, 2025, the Asteroid Terrestrial-impact Last Alert System (ATLAS) in Rio Hurtado detected a third interstellar object in our Solar System, the comet now known as 3I/ATLAS (or C/2025 N1 ATLAS). Like its predecessors, the arrival of this object has fueled immense scientific interest and led to proposals for missions that could rendezvous with future ISOs.

3I/ATLAS, our third discovered interstellar visitor, has been in the news a lot lately for a whole host of reasons, and rightly so given the amount of unique scientific data different groups and telescopes have been collecting off of it. A new pre-release paper from researchers at the Auburn University Department of Physics recounts yet another interesting aspect of the new visitor - its water content.

On October 14th, 2024, NASA's Europa Clipper mission began its long journey to Jupiter's icy moon Europa. On March 1st, the probe reached Mars, where it conducted a gravity-assist maneuver. While orbiting the Red Planet, mission controllers back on Earth took the opportunity to test the probe's Radar for Europa Assessment and Sounding: Ocean to Near-surface (REASON). Once it reaches Europa, Clipper will use this radar instrument to probe beneath the moon's icy sheet and search for pockets of water that could lie within.

Our powerful, modern, ground-based telescopes have to deal with a lot of noise in the starlight they observe. The noise comes from Earth's atmosphere, which forces telescopes to use solutions like adaptive optics to filter it out. Researchers at the University of Warwick in the UK, in partnership with Spanish institutions, are developing a method to use that noise to measure greenhouse gases (GHGs) in Earth's atmosphere.

Fast radio bursts (FRBs) last around a millisecond and in doing so encode otherwise unattainable information on the plasma which permeates our Universe, providing insights into magnetic fields and gas distributions. In a paper authored by Manisha Caleb from the University of Sydney, the team report upon the discovery of FRB 20240304B which lies at a redshift of 2.148 +/- 0.001 corresponding to just 3 billion years after the Big Bang.

It seems simple at first. The Moon and Mars are less massive than Earth and have weaker gravity. To test how a rover will traverse their surfaces, engineers make less massive engineering versions of rovers and test them in simulated surface conditions here on Earth. Since the Moon's gravity is six times weaker than Earth's, for example, engineers make versions of lunar rovers that are one sixth as massive. The data then tells engineers what they need to know.