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University of Ottawa Researchers Propose 26.7-Billion-Year-Old Universe Without Dark Matter, Passes Big Bang Test

University of Ottawa Researchers Propose 26.7-Billion-Year-Old Universe Without Dark Matter, Passes Big Bang Test

Researchers at the University of Ottawa have introduced an alternative theory for the universe's origin, suggesting it is 26.7 billion years old, significantly older than the widely accepted 13.8 billion years. This theory, named covarying coupling constants plus tired light (CCC+TL), proposes that fundamental constants governing physical interactions change over cosmic time. These changes, according to the researchers, could explain phenomena currently attributed to dark matter and dark energy, thereby eliminating the need for these hypothetical components. The CCC+TL model has successfully passed a crucial test related to Big Bang nucleosynthesis (BBN), the process that formed the first light elements in the early universe. By modifying the Kawano/NUC123 computer code to incorporate the CCC+TL model's scaling parameters, the researchers found that the predicted abundances of light elements were nearly identical to those of the standard model, indicating consistency with early universe observations.

Hubble Space Telescope Explores Messier 30, Offering Clues to Milky Way's Ancient Past

Hubble Space Telescope Explores Messier 30, Offering Clues to Milky Way's Ancient Past

The NASA/ESA Hubble Space Telescope has conducted new observations of Messier 30, a globular cluster located approximately 27,500 light-years away in the southern constellation of Capricornus. This cluster, also known as M30, NGC 7099, or the Jellyfish Cluster, contains some of the oldest stars in the Milky Way Galaxy. These observations aim to provide clues about how these ancient stellar populations formed and evolved, and to investigate whether some of them originated outside our home galaxy. Globular clusters like Messier 30 are considered 'time capsules' that preserve the original chemistry of the young Milky Way. However, the fact that Messier 30 and many other globular clusters orbit in the opposite direction to the Milky Way's spin suggests they might have been captured by our galaxy in the distant past rather than forming within it.

NASA Astrophysics Division to Host Virtual Town Hall on Strategic Vision

NASA Astrophysics Division to Host Virtual Town Hall on Strategic Vision

The NASA Astrophysics Division will host a virtual Town Hall meeting on November 13, 2026, open to all Astrophysics community members, academia, and the public. The two-hour meeting will feature NASA Astrophysics leadership providing division updates, mission highlights, and discussions on efforts supporting the agency’s 'Faster to Science' initiative. The primary focus of this Town Hall will be to discuss the strategic vision and mission for the division, including current initiatives and future plans. Attendees are encouraged to submit questions prior to and during the event to ensure they are considered during the discussion, with a deadline for pre-submitted questions on November 12, 2026, at 11:59 p.m. ET.

Hubble Space Telescope Reveals 'Cat's Tail' Dust Trail, Suggesting Collision of Icy Worlds

Hubble Space Telescope Reveals 'Cat's Tail' Dust Trail, Suggesting Collision of Icy Worlds

The Hubble Space Telescope has captured the first visible-light view of a faint dust streak, dubbed the 'Cat's Tail,' near the young star Beta Pictoris. This streak, previously only detected in infrared by the James Webb Space Telescope, is believed to be the aftermath of a collision between two large icy worlds, each roughly the size of Pluto's moon Charon or Makemake. The 'Cat's Tail' is composed almost entirely of dark, carbon-rich organic refractory material, which absorbs visible light, explaining its elusiveness to visible-light observations until now. Arin Avsar, a doctoral student at the Lunar and Planetary Laboratory of the University of Arizona, led the new study, which involved stacking Hubble images taken between 2012 and 2025 to achieve the deepest view of the system to date. The faintness of the tail in visible light, compared to its infrared brightness, suggests its unique composition and porous dust grains.

NASA’s Chandra Observatory Identifies Source of Star’s Mysterious Outbursts

NASA’s Chandra Observatory Identifies Source of Star’s Mysterious Outbursts

NASA’s Chandra X-ray Observatory has identified the cause of repeated outbursts from a giant, unstable star known as AT 2016blu, located in the spiral galaxy NGC 4559, approximately 30 million light-years from Earth. Astronomers discovered a previously hidden companion object orbiting AT 2016blu, which pulls material away from the massive star every 113 days. This companion is either a stellar-mass black hole or a neutron star. This marks the first X-ray detection of this class of erupting stars and the first time such an object has been found with a black hole or neutron star companion. The star, a luminous blue variable, exhibits extreme brightness spikes resembling supernova explosions, yet it survives these events, earning it the moniker 'supernova impostor.'

Why Apollo 4 Needed 89 Truckloads of Liquid Oxygen

Why Apollo 4 Needed 89 Truckloads of Liquid Oxygen

Apollo 4, the inaugural flight of the mighty Saturn V rocket, was not just a critical engineering test; it was also a major public event that capti...

On This Day in 1967: Apollo 4 Launches NASA's First Saturn V

On This Day in 1967: Apollo 4 Launches NASA's First Saturn V

Apollo 4, also known as Apollo-Saturn 501 and AS-501, marked a pivotal moment in the United States' Apollo program. Launched on November 9, 1967, f...

NASA CHAPEA Mission 2 Crew Completes 378-Day Simulated Mars Mission

NASA CHAPEA Mission 2 Crew Completes 378-Day Simulated Mars Mission

Four research volunteers, Ross Elder, Ellen Ellis, James Spicer, and Matthew Montgomery, have successfully completed NASA’s second yearlong Mars surface simulation, CHAPEA (Crew Health and Performance Exploration Analog) Mission 2. After 378 days inside the Mars Dune Alpha habitat at NASA’s Johnson Space Center in Houston, the crew emerged on October 31, 2026. During their isolation, they engaged in simulated Marswalks, robotic operations, habitat maintenance, exercise, and crop cultivation. The mission aimed to collect critical health and performance data while the crew navigated limited resources and communication delays of up to 22 minutes each way, mirroring conditions of a real Mars mission.

NASA Launches $1 Million Moon Base Student Challenge to Address Lunar Engineering Problems

NASA Launches $1 Million Moon Base Student Challenge to Address Lunar Engineering Problems

NASA has introduced the Moon Base Student Challenge, a $1 million design competition aimed at engaging high school and post-secondary students in solving critical engineering problems for a sustainable human presence on the Moon. Announced by NASA Administrator Jared Isaacman and Moon Base Program manager Carlos García-Galán, the challenge focuses on six key areas: Power, Construction (In-Situ Resource Utilization), Life Support, Surface Mobility, Communications, and Astronaut Safety. These are genuine engineering gaps that NASA itself is actively working to resolve for its Moon Base Program, which aims to establish a permanent crewed outpost at the lunar south pole by the early 2030s. Students have until January 25, 2027, to register and submit trade studies and stakeholder briefings.

Caltech JPL's Historical Contributions to U.S. Space Exploration Highlighted in New Exhibition

Caltech JPL's Historical Contributions to U.S. Space Exploration Highlighted in New Exhibition

A new exhibition titled 'Dare Mighty Things: From Rocketry to Space Exploration at Caltech JPL' is showcasing the Jet Propulsion Laboratory's (JPL) ninety-year history of contributions to rocketry and space exploration. The exhibition, drawing from the collections of both the Caltech Archives and Special Collections and the JPL Archives, traces the evolution of JPL's missions and the collaboration between JPL researchers and Caltech. Initially, in the 1930s, Caltech graduate students and rocket enthusiasts began small rocket engine experiments, attracting Army funding for rocket-assisted airplane takeoff. This led to the establishment of JPL in 1943. After the USSR launched Sputnik 1 in 1957, JPL built the first successful U.S. satellite, Explorer 1, in 1958. Following the establishment of NASA, JPL transitioned from Army work to designing uncrewed spacecraft for NASA, playing a pivotal role in lunar missions with Pioneer, Ranger, and Surveyor probes, and later sending Mariner probes to Venus and Mars. JPL...

Hubble Space Telescope Reveals 93-Billion-Mile Cosmic Dust Structure, 'Cat's Tail,' Challenging Astronomical Explanations

Hubble Space Telescope Reveals 93-Billion-Mile Cosmic Dust Structure, 'Cat's Tail,' Challenging Astronomical Explanations

Astronomers at the University of Arizona, utilizing the Hubble Space Telescope, have made a significant discovery: a gargantuan, 93-billion-mile-long cosmic dust feature dubbed the 'Cat's Tail.' This structure is located in the Beta Pictoris system, approximately 63 light-years away. Previously, this anomaly was only detectable by NASA's James Webb Space Telescope in infrared light. Lead researcher Arin Avsar explained that the 'Cat's Tail' evaded visible-light detection for so long because it is composed almost entirely of heavily carbon-based organic refractory material, which effectively absorbs visible light. The structure is roughly 1,000 astronomical units long, equivalent to wrapping between the Earth and the Sun about 500 times.

NASA's Artemis II Mission Causes Unprecedented Atmospheric Disturbances Across North America

NASA's Artemis II Mission Causes Unprecedented Atmospheric Disturbances Across North America

NASA's Artemis II mission, launched on April 1, 2026, from Kennedy Space Center in Florida, generated three distinct and unprecedented disturbances in Earth's upper atmosphere. Scientists from National Cheng Kung University in Taiwan, utilizing ground-based GPS receivers, identified these disturbances. The most significant effects were not from the initial liftoff but from subsequent engine maneuvers as the spacecraft prepared for its lunar journey. One maneuver, an apogee raise burn approximately one hour after liftoff, created shock waves and large-scale disturbances that spread across 50 degrees longitude over North America. A third disturbance occurred during the trans-lunar injection burn 25 hours after launch. These events temporarily stripped electrons from the ionosphere, an electrically charged layer of the upper atmosphere crucial for radio and navigation signals. The research indicates these disturbances were more intense than those from any previous rocket launch, including SpaceX's Starship te...