All articles tagged with #astronomy
A large international team has confirmed that Earth-mass planets can maintain stable orbits in the habitable zone of the nearby binary star system 70 Ophiuchi. By analyzing a century of radial velocity data, researchers ruled out the presence of Jupiter-sized giants, resolving a 171-year-old mystery, while showing that smaller rocky worlds could still exist undetected.
NASA’s Nancy Grace Roman Space Telescope is en route to the Sun-Earth L2 point, where it will join the James Webb Space Telescope. While Webb excels at high-resolution, narrow-field imaging, Roman features a wide field of view to survey large sky patches and detect new objects. Roman’s coronagraph will also enable detailed exoplanet observations by blocking starlight.
New research suggests that Betelgeuse’s companion star is hidden from Hubble’s ultraviolet view not because it is too faint, but because it is obscured by a dusty wake stirred up as it orbits through the red giant’s extended atmosphere. This explains the discrepancy between ground-based detections and Hubble’s non-detections.
Astronomers have captured the most detailed image to date of the Pa 30 nebula, the remnant of a supernova observed in 1181. Using the Gemini North telescope in Hawaii, researchers discovered that the nebula's filaments are not smooth streaks but chains of uniform, pearl-like gas knots. This high-resolution view, published in The Astrophysical Journal, offers new clues about how the central 'zombie star' survived the explosion and how the ejecta formed.
Astronomers identified a 10-minute X-ray burst from a distant galaxy as the result of two neutron stars colliding. Detected by the Einstein Probe in July 2025, the event, designated EP250704a, featured a brief gamma-ray flash followed by prolonged X-ray emission. Researchers suggest the merger created a magnetar, a highly magnetized neutron star, which powered the extended activity. This discovery reveals a previously hidden phase of neutron star mergers, offering new insights into the formation of heavy elements and the nature of compact object remnants.
A new study suggests the Solar System may collapse 100 times faster than previously estimated due to turbulent mass loss from the dying Sun. Researchers found that random ejections of solar material will destabilize outer planet orbits, potentially ejecting giants like Saturn within three billion years of the Sun becoming a white dwarf.
The Orionid meteor shower is active from late September to late November, peaking overnight on October 21-22, 2026. Caused by debris from Halley's Comet, these meteors travel at 41 miles per second, producing bright trails and fireballs. While a waxing gibbous moon may hinder visibility, the shower offers 10-20 meteors per hour under ideal conditions.
Astronomer José Rodrigues captured a striking image of the Milky Way arching over the European Southern Observatory's La Silla site in Chile's Atacama Desert. The photograph features the Trifid and Lagoon Nebulae within the Sagittarius constellation, positioned above the New Technology Telescope and the 3.6-meter telescope. Rodrigues, who studies exoplanets, noted the personal significance of the 3.6-meter scope, which houses instruments used to detect worlds outside our solar system.
Astronomers have identified the host galaxy of the most distant fast radio burst (FRB) ever detected, designated FRB 20240304B. Using the James Webb Space Telescope (JWST), researchers confirmed the burst originated just 3 billion years after the Big Bang, during the peak of cosmic star formation. The host is a surprisingly small dwarf galaxy, challenging previous assumptions that FRBs occur in massive, older galaxies. This discovery supports the theory that FRBs are generated by magnetars from recent supernovae rather than neutron star mergers, and allows scientists to map invisible matter across 80% of cosmic history.
Astronomers have identified the first known 'second-generation' planet, a world that formed from the debris of a dying star rather than its birth. The discovery, centered on the white dwarf HS 0209+0832, relies on re-analyzing 1999 Hubble data that revealed unusual levels of niobium. This gas giant, likely Jupiter-sized, orbits extremely close to the star and is currently losing its atmosphere, which rains back onto the white dwarf. The finding suggests planetary formation can occur long after a star's death, potentially offering insights into the future of our own solar system.
A new study in Nature Geoscience explains the formation of Mars's Arsia Mons Elongated Cloud (AMEC) using homogeneous nucleation, a process previously thought impossible in planetary atmospheres. The cloud, first spotted by ESA's Mars Express in 2018, forms daily during the southern hemisphere's dusty season. It stretches up to 1,800 km downwind of the Arsia Mons volcano. Researchers found that conventional models failed to replicate the cloud's behavior. By incorporating homogeneous nucleation, where water vapor freezes directly into ice without dust particles, the model successfully matched observations. This discovery suggests Mars's atmosphere can reach extreme supersaturation levels, challenging existing assumptions about cloud physics on Earth and other worlds.
Astronomers have identified the host galaxy of FRB 20240304B, the most distant fast radio burst ever detected. The signal originated 10.6 billion years ago, when the universe was only 3 billion years old. The burst was detected by the MeerKAT telescope in South Africa and its host galaxy was confirmed by the James Webb Space Telescope. The host is a surprisingly small, young dwarf galaxy actively forming stars, which supports theories that fast radio bursts are generated by young magnetars rather than older neutron star mergers.
The Draconid meteor shower peaks on October 8, 2026, offering a rare evening viewing window from 7 p.m. to 9 p.m. depending on time zone. Unlike most showers, it is visible shortly after sunset rather than pre-dawn. While activity is typically low at 5-10 meteors per hour, the proximity of Comet 21P/Giacobini-Zinner to Earth creates a possibility for a meteor storm. Clear skies and a waning crescent moon provide ideal conditions for observers in the Northern Hemisphere.
Astronomers have identified the most distant fast radio burst (FRB) ever detected, designated FRB 20240304B. Discovered by the MeerKAT telescope in South Africa in March 2024, the signal traveled for over 10 billion years, originating when the universe was just 3 billion years old. The James Webb Space Telescope (JWST) pinpointed its host as a surprisingly small, metal-poor dwarf galaxy actively forming stars, a finding that challenges existing theories about FRB origins and offers new data for mapping the cosmic web.
Astronomers have identified the most distant fast radio burst (FRB) ever recorded, originating from a galaxy that existed when the universe was only 3 billion years old. Detected via the MeerKAT telescope in South Africa and confirmed by the James Webb Space Telescope, this burst traveled for over 10 billion years, covering approximately 80% of cosmic history. The source is a young, metal-poor galaxy with rapid star formation, challenging existing theories about FRB origins. This discovery suggests FRBs were common in the early universe and provides a new method for mapping unseen matter across vast cosmic distances.