Space and astronomy news
Humans can’t seem to interact with the environment at all without fouling it in some way. From plastic bags in the ocean’s deepest regions to soot on Himalayan glaciers, our waste is finding its way into Earth’s most difficult-to-reach places.
Now, we can add metals in the stratosphere to this ignominious list.
Continue reading “Spaceflight is Polluting the Atmosphere with Metal”
It might be oxymoronic to say that the more we find out about something, the more mysterious it becomes. But if that’s true of anything in our Solar System, it might be true about Ceres, the largest body in the main asteroid belt.
Continue reading “A Hypervelocity Experiment Mimics the Surface Conditions of Ceres”
Plenty of recent mainstream news articles have touted AI’s ability to assist in the process of scientific discovery. But most of them predicted that it could take years or even decades to see the full effect. Astronomy seems ahead of the curve, though, with the announcement of a new AI system developed by researchers at Northwestern University and elsewhere that can now autonomously detect and classify supernovae.
Continue reading “A Machine Learning Algorithm Finds its First Supernova”
Will Comet 2/P Encke and the Taurid meteors ‘trick’ or ‘treat’ observers this year?
October and November are always great months to watch for meteors, and 2023 is no exception. This year provides a special reason to be vigilant, as the source of the infamous November Taurid Fireballs Comet 2P Encke reaches perihelion for 2023 on October 22nd, at 0.34 Astronomical Units (AU) from the Sun.
Continue reading “Comet Encke and the Halloween Fireballs of 2023”
One of the reasons that asteroid mining is such a popular idea among industrialists is that they holds large quantities of heavy elements. NASA’s Psyche spacecraft just launched this week, headed for an asteroid that holds ten to thirty quintillion U.S dollars worth of rare-earth elements and other heavy metals. During our planet’s formation, the heavier of these elements tended to sink deep into the Earth, making them hard to find. But even in small asteroids, these heavy elements might be much more common and accessible. Since we rely on these rare-earth elements for our modern society, metal-rich asteroids such as Psyche are worth checking out.
Continue reading “Can We Find the Heaviest Elements in Asteroids?”
Astronauts will face a host of obstacles when they visit the Moon again. There’s powerful radiation, wild temperature swings, and challenging gravity to deal with. There’s also dust and lots of it. Moondust was a hazard for the Apollo astronauts, and future lunar astronauts will have to contend with it, too.
What if they turn some of that dust into solid surfaces to drive on?
Continue reading “Building Roads Out of Moon Dust”
When stars are born, they do it inside a molecular cloud. Astronomers long assumed that the “crèche” supplied all the nutrients that protostars needed to form. However, it turns out they get help from outside the nest.
Continue reading “Protostars Can Siphon Material from Far Away”
The Sun is such a stable presence in our lives that we often take it for granted. Few things are as certain sure as the rising of the Sun each morning, and the cycles of the seasons mark the years of our lives. But the Sun is a star, and stars can sometimes be unpredictable. They can emit powerful solar flares and powerful X-rays. With our deep dependence on technology and electricity, the Sun poses a small but real risk to our civilization. As a recent study shows, the Sun has had some extremely powerful flares in recent cosmic times.
Continue reading “A Monster Solar Storm Struck Earth 14,300 Years Ago”
Inspiration can come in all forms, but one of the best ways to convey ideas and get people excited about them is through art. In particular, video has become one of the most prominent forms of entertainment in our modern lives, whether through 5-second TikToks or 2+ hour-long documentaries on the Crusades. Therefore, it should come as no surprise that some videographers are inspired by concepts in space exploration and can convey that inspiration through their media. And now, thanks to the internet, a new entrant to that category has recently surfaced.
Continue reading “Imagine What Life Would be Like on a Giant Rotating Space Station”
The Kuiper Belt, the vast region at the edge of our Solar System populated by countless icy objects, is a treasure trove of scientific discoveries. The detection and characterization of Kuiper Belt Objects (KBOs), sometimes referred to as Trans-Neptunian Objects (TNOs), has led to a new understanding of the history of the Solar System. The disposition of KBOs is an indicator of gravitational currents that have shaped the Solar System and reveal a dynamic history of planetary migrations. Since the late 20th century, scientists have been eager to get a closer look at KBOs to learn more about their orbits and composition.
Studying bodies in the outer Solar System is one of the many objectives of the James Webb Space Telescope (JWST). Using data obtained by Webb’s Near-Infrared Spectrometer (NIRSpec), an international team of astronomers observed three dwarf planets in the Kuiper Belt: Sedna, Gonggong, and Quaoar. These observations revealed several interesting things about their respective orbits and composition, including light hydrocarbons and complex organic molecules believed to be the product of methane irradiation.
Continue reading “JWST Observes the Kuiper Belt: Sedna, Gonggong, and Quaoar”