Space and astronomy news
The James Webb Space Telescope was designed and built to study the early universe, and hopefully revolutionary our understanding of cosmology. Two years after its launch, it’s doing just that.
Continue reading “James Webb’s Big Year for Cosmology”
Titan is one of the solar system’s most fascinating worlds for several reasons. It has something akin to a hydrological cycle, though powered by methane. It is the solar system’s second-largest moonMooner our own. It is the only other body with liquid lakes on its surface. That’s part of the reason it has attracted so much attention, including an upcoming mission known as Dragonfly that hopes to use its thick atmosphere to power a small helicopter. But some of the most interesting features on Titan are its lakes, and Dragonfly, given its means of locomotion, can’t do much with those other than look at them from afar. So another mission, initially conceived by James McKevitt, then an undergraduate at Loughborough University but now a PhD student at University College London would take a look at both their surface and underneath.
Continue reading “A Mission to Dive Titan’s Lakes – and Soar Between Them”Catching the best sky watching events for the coming year 2025.
How about that eclipse in 2024? Certainly, the Great North American Eclipse of April 8th 2024 was one for the ages, instilling the eclipse-chasing bug in many a new skywatching fan. Now, for the bad news: 2025 is a rare, totality free year, featuring only a pair of remote partial solar eclipses. The good news is, there’s lots more in store to see in the sky in 2025, with a pair of fine total lunar eclipses, Mars at its best, and lunar occultations galore. And hey, the Sun is still mighty active, and the cosmos does still owe us another fine comet.
Continue reading “Top Astronomy Events for 2025”
For decades cosmologists have wondered if the large-scale structure of the universe is a fractal: if it looks the same no matter the scale. And the answer is: no, not really. But in some ways, yes. Look, it’s complicated.
Continue reading “Is the Universe a Fractal?”
Within nearly every galaxy is a supermassive black hole. The beast at the heart of our galaxy contains the mass of millions of suns, while some of the largest supermassive black holes can be more than a billion solar masses. For years, it was thought that these black holes grew in mass over time, only reaching their current size after a billion years or more. But observations from the Webb telescope show that even the youngest galaxies contain massive black holes. So how could supermassive black holes grow so large so quickly? The key to the answer could be the powerful jets black holes can produce.
Continue reading “How Did Black Holes Grow So Quickly? The Jets”
The black hole information paradox has puzzled physicists for decades. New research shows how quantum connections in spacetime itself may resolve the paradox, and in the process leave behind a subtle signature in gravitational waves.
Continue reading “Quantum Correlations Could Solve the Black Hole Information Paradox”
In April 2019, the Event Horizon Telescope (EHT) collaboration made history when it released the first-ever image of a black hole. The image captured the glow of the accretion disk surrounding the supermassive black hole (SMBH) at the center of the M87 galaxy, located 54 million light-years away. Because of its appearance, the disk that encircles this SMBH beyond its event horizon (composed of gas, dust, and photons) was likened to a “ring of fire.” Since then, the EHT has been actively imaging several other SMBH, including Sagittarius A* at the center of the Milky Way!
In addition, the EHT has revealed additional details about M87, like the first-ever image of a photon ring and a picture that combines the SMBH and its relativistic jet emanating from its center. Most recently, the EHT released the results of its latest observation campaign. These observations revealed a spectacular flare emerging from M87’s powerful relativistic jet. This flare released a tremendous amount of energy in multiple wavelengths, including the first high-energy gamma-ray outburst observed in over a decade.
Continue reading “M87 Releases a Rare and Powerful Outburts of Gamma-ray Radiation”
Almost every large galaxy has a supermassive black hole churning away at its core. In most cases, these black holes spin in concert with their galaxy, like the central hub of a cosmic wagon wheel. But on December 18, 2024, NASA researchers announced they had discovered a galaxy whose black hole appears to have been turned on its side, spinning out of alignment with its host galaxy.
Continue reading “Astronomers Find a Black Hole Tipped Over on its Side”
Through the Artemis Program, NASA will send the first astronauts to the Moon since the Apollo Era before 2030. They will be joined by multiple space agencies, like the ESA and China, who plan to send astronauts (and “taikonauts”) there for the first time. Beyond this, all plan to build permanent habitats in the South Pole-Aitken Basin and the necessary infrastructure that will lead to a permanent human presence. This presents many challenges, the most notable being those arising from the nature of the lunar environment.
Aside from the extremes in temperature, a 14-day diurnal cycle, and the airless environment, there’s the issue of lunar regolith (aka moondust). In addition to being coarse and jagged, lunar regolith sticks to everything because it is electrostatically charged. Because of how this dust plays havoc with astronaut health, equipment, and machinery, NASA is developing technologies to mitigate dust buildup. Seven of these experiments will be tested during a flight test using a Blue Origin New Shepard rocket to evaluate their ability to mitigate lunar dust.
Continue reading “NASA is Developing Solutions for Lunar Housekeeping’s Biggest Problem: Dust!”
New research suggests that our best hopes for finding existing life on Mars isn’t on the surface, but buried deep within the crust.
Continue reading “Where’s the Most Promising Place to Find Martian Life?”