Space and astronomy news
Galaxy collisions are foundational events in the Universe. They happen when two systems mingle stars in a cosmic dance. They also cause spectacular mergers of supermassive black holes. The result is one very changed galaxy and a singular, ultra-massive black hole.
Continue reading “Two Supermassive Black Holes on a Collision Course With Each Other”
Large galaxies like ours are hosts to Supermassive Black Holes (SMBHs.) They can be so massive that they resist comprehension, with some of them having billions of times more mass than the Sun. Ours, named Sagittarius A* (Sgr A*), is a little more modest at about four million solar masses.
Astrophysicists have studied Sgr A* to learn more about it, including its age. They say it formed about nine billion years ago.
Continue reading “The Milky Way’s Supermassive Black Hole Might Have Formed 9 Billion Years Ago”
The Boeing Starliner module has been plagued with issues despite what seemed to be the dawning of a new commercial space giant. The module detached from the International Space Station on 7 September but without its crew! Butch Wilmore and Suni Williams journeyed to the ISS in June this year in what was supposed to be a mission lasting just a week. They are still there! Just a few days ago, their module returned under remote control while they stay in orbit until February!
Continue reading “Starliner Comes Home Empty”
We recently reported on the successful deployment of the solar sail of the Advanced Composite Solar Sail System (ACS3) technology demonstration mission. That huge achievement advances one of the most important technologies available to CubeSats – a different form of propulsion. But getting there wasn’t easy, and back in May, a team of engineers from NASA’s Langley Research Center who worked on ACS3 published a paper detailing the trials and tribulations they went through to prepare the mission for prime time. Let’s take a look at what they learned.
Continue reading “What Did We Learn From Manufacturing the ACS3 Solar Sail Mission?”
An ancient passerby may have visited the Sun and inadvertently helped shape the Solar System into what it is today. It happened billions of years ago when a stellar drifter came to within 110 astronomical units (AU) of our Sun. The effects were long-lasting and we can see evidence of the visitor’s fleeting encounter throughout the Solar System.
Continue reading “A Stellar Flyby Jumbled Up the Outer Solar System”
Three amazing recent asteroid finds show what’s possible in terms of astronomy online.
Practical astronomy is increasingly becoming an online affair. In 2023 we wrote about this trend, and highlighted how Russian observer and amateur astronomer Filipp Romanov used time on remote observatory networks to successfully discover two asteroids, which he named 623826 Alekseyvarkin and 623827 Nikandrilyich after his great-grandfathers. Now, Filipp has repeated this feat and pushed the limit of what’s possible online with the discovery of a trio of asteroids, including a rare near-Earth asteroid discovery found using a remote system.
Continue reading “Amateur Astronomer Finds Additional Asteroids With Remote Telescopes”
The ESA/JAXA BepiColombo spacecraft made another flyby of its eventual target, Mercury. This is one of a series of Mercury flybys, as the spacecraft completes a complex set of maneuvers designed to deliver it to the innermost planet’s orbit. Its cameras captured some fantastic images of Mercury.
Continue reading “BepiColombo’s New Images of Mercury are Cool”
Ask most people what a galaxy is made up of, and they’ll say it’s made of stars. Our own galaxy, the Milky Way, hosts between about 100 to 300 billion stars, and we can see thousands of them with our unaided eyes. But most of a galaxy’s mass is actually gas, and the extent of the gas has been difficult to measure.
Researchers have found a way to see how far that gas extends into the cosmos.
Continue reading “The True Size of Galaxies is Much Larger Than We Thought”
Here at UT, we’ve had several stories that describe the concept of a space elevator. They are designed to make it easier to get objects off Earth and into space. That, so far, has proven technically or economically infeasible, as no material is strong enough to support the structure passively, and it’s too energy-intensive to support it actively. However, it could be more viable on other worlds, such as the Moon. But what about worlds farther afield? A student team from the University of Colorado at Colorado Springs looked at the use case of a space elevator on Ceres and found that it could be done with existing technology.
Continue reading “Using A Space Elevator To Get Resources Off the Queen of the Asteroid Belt”
Exoplanets have been discovered with a wide range of environmental conditions. WASP-76b is one of the most extreme with a dayside temperature of over 2,000 degrees. A team of researchers have found that it’s even more bizarre than first thought! It’s tidally locked to its host star so intense winds encircle the planet. They contain high quantities of iron atoms that stream from the lower to upper layers around the atmosphere.
Continue reading “Iron Winds are Blowing on WASP-76 b”