Space exploration, scientific discoveries, astronomy, and physics.
259 articles
Artemis II astronauts have successfully launched aboard the powerful Space Launch System rocket, beginning their historic journey around the Moon. This crewed mission marks a significant return to deep space exploration after more than 50 years. It tests vital systems for future lunar landings and Mars missions.
NASA's Orion spacecraft experienced unexpected damage to its heat shield during the Artemis 1 mission's re-entry. Scientists have identified gas buildup during skip re-entry as the cause and are adjusting the trajectory for Artemis 2 to prevent further spallation. A more porous material will be used for Artemis 3.
Our Sun's future red giant phase could turn Jupiter's moons into water worlds. Scientists explore the potential for life on icy moons and discuss the far-reaching implications of stellar evolution and the search for habitable zones beyond our familiar solar system.
The universe appears to be expanding faster than the speed of light, a phenomenon that seems to contradict Einstein's laws. However, this cosmic speedster doesn't break physics rules because it's space itself expanding, not galaxies moving through space. This mind-bending concept reveals the universe's true scale and dynamics.
The Artemis II crew has safely returned to Earth, splashing down in the Pacific Ocean after a 10-day mission. They journeyed farther from Earth than any humans before, testing the Orion spacecraft for future lunar and Martian exploration.
A new cart design demonstrates how an object can travel faster than the wind pushing it, using a clever wheel and spool system. This principle, similar to the Blackbird land yacht, challenges our understanding of motion and energy transfer.
The Vera C. Rubin Observatory is now online, revolutionizing our ability to detect asteroids on collision courses with Earth. This powerful telescope can spot dangerous space rocks days or even weeks before impact, offering crucial time for scientific study and potential planetary defense.
New data from the DESI project suggests the universe's expansion is not only accelerating but that the rate of acceleration is also changing. This phenomenon, known as a 'jerk' in physics, challenges current models and points to new mysteries about dark energy and cosmic evolution.
A sudden hull breach on a spacecraft poses a serious threat to astronaut survival. The rate of air loss and its impact on human physiology depend critically on the size of the hole and the spacecraft's internal volume. Historical incidents and current spaceflight knowledge highlight the critical importance of understanding these dynamics for mission safety.
Scientists explore the feasibility of Jupiter becoming a star to power galaxy-sized starships and revisit Project Orion's nuclear propulsion concept. The article also delves into the science behind meteor storms, lunar water ice, ring galaxies, and the exciting return of human missions to the Moon with Artemis.
