Perseverance is having a proud parent moment in this image, looking like it’s waiting with a child at the bus stop on the first day of school.Continue reading “Perseverance Takes a Selfie With Ingenuity. It’s Almost Time to fly”
The search for extraterrestrial intelligence (SETI) has long roots in human history. With the advent of modern technologies, scientists were finally able to start scanning the skies for any sign of life. When the search first started back in the 1960s, it focused almost exclusively on trying to detect radio signals. Over the decades, no irrefutable evidence of any artificial radio signals was ever found. Financial support started to drift away from the discipline, and where the money goes so do many scientists.
But more recently, the spike in interest in exoplanet research has breathed new life into the search for intelligent life, now commonly referred to as the search for “technosignatures”. In 2018, NASA sponsored a conference where scientists who were involved with the field came to discuss its current state. That meeting was followed up by a meeting last year sponsored by the Blue Marble Institute, which NASA also helped to sponsor. Now a working paper has come out from the group of SETI scientists that attended the conference. Numerous potential mission ideas to find technosignatures are described in the paper. It’s clear the search for extraterrestrial intelligence isn’t limited just to radio astronomy anymore.Continue reading “What are the Best Ways to Search for Technosignatures?”
Black holes come in three sizes: small, medium, and large. Small black holes are of stellar mass. They form when a large star collapses at the end of its life. Large black holes lurk in the centers of galaxies and are millions or billions of solar masses. Middle-sized black holes are those between 100 to 100,000 solar masses. They are known as Intermediate Mass Black Holes (IMBHs), and they are the kind we least understand.Continue reading “An Intermediate-Mass Black Hole Discovered Through the Gravitational Lensing of a Gamma-ray Burst”
Did the Perseverance rover capture a rainbow on Mars? This image, from the rover’s left rear Hazard Camera, sure looks like it. But alas, no. However, film director JJ Abrams would be proud.Continue reading “Perseverance Captured This Image of a “Rainbow” on Mars, but it’s just a Lens Flare in the Rover’s Camera”
On April 3rd, the Mars Ingenuity helicopter was removed from its carbon-fiber shield on the Perseverance rover’s belly. On Sunday, April 11th, it will make its first attempt at a powered, controlled flight, becoming the first aircraft to operate on another planet. In the meantime, Ingenuity accomplished another major milestone as it survived its first full night on the Martian surface.Continue reading “Mars Helicopter Survives its First Night on Mars is Getting Ready to Fly”
Perseverance has been busy lately. After testing its systems out, taking the first sound recording ever on the Red Planet, and dropping off its helicopter sidekick, now it has the opportunity to work on its primary mission: stare at some rocks. And occasionally zap them with a laser.Continue reading “Here’s a Strange Rock That Perseverance Shot With its Laser”
When NASA sends astronauts back to the Moon as part of the Artemis Program, they will be taking the long view. Rather than being another “footprints and flags” program, the goal is to create a lasting infrastructure that will ensure a “sustained program of lunar exploration.” A major element in this plan is the Lunar Gateway, an orbital habitat that astronauts will use to venture to and from the surface.
The first step in establishing the Gateway is the deployment of two critical modules – the Habitation and Logistics Outpost (HALO) and the Power and Propulsion Element (PPE). According to a recent update, NASA (along with Maxar Technologies and Busek Co.) recently completed a hot-fire test of the PPE propulsion subsystem – the first of many that will ensure that the PPE and HALO will be ready for launch by 2024.Continue reading “Lunar Gateway Will Maintain its Orbit With a 6 kW ion Engine”
X-rays offer a unique insight into the astronomical world. Invisible to the naked eye, most commonly they are thought of as the semi-dangerous source of medical scans. However, X-ray observatories, like the Chandra X-ray Observatory are capable of seeing astronomical features that no other telescope can. Recently scientists found some of those X-rays coming from a relatively unexpected source – Uranus.Continue reading “Uranus X-Rays are Probably Reflected Sunlight, but There Could be Another Source as Well”
For years astronomers have puzzled over a strange excess of gamma rays coming from the galactic center. Annihilating dark matter has always been a tantalizing explanation, and new research claims that it’s the best answer.Continue reading “Is Dark Matter Responsible for Extra Gamma Rays Coming From the Center of the Milky Way?”
The central core of our galaxy is not a friendly place for star formation, and yet new observations have revealed almost four dozen newly-forming systems. These results challenge our understanding of the complicated physics of our galactic heart.Continue reading “There are new Stars Forming Near the Core of the Milky Way Despite the Harsh Environment”