Space News & Blog Articles

Modern ground-based telescopes rely on adaptive optics (AO) to deliver clear images. By correcting for atmospheric distortion, they give us exceptional pictures of planets, stars, and other celestial objects. Now, a team at the National Solar Observatory is using AO to examine the Sun's corona in unprecedented detail.

Binary star systems are pairs of stars held together by gravity, orbiting a common center of mass. More than half of all stars in our Galaxy are part of a binary or multiple-star system making them surprisingly common. The stars in a binary can vary widely in mass, size, and brightness, and their interactions often shape their evolution in dramatic ways. In some cases, the gravity from one star can drag material from its companion, leading to explosive events like novae or even supernovae. Studying binary systems not only helps us to understand the life cycle of stars but also helps us understand more about the behaviour of matter under extreme conditions.

NASA’s Perseverance rover landed on Mars in the Jezero Crater on February 18, 2021. The area is thought to have once been a lake bed that held water billions of years ago, making it a prime location to study the planet’s geological history. Equipped with advanced instruments, Perseverance is tasked with analyzing Martian rocks, soil, and the atmosphere of the red planet. It’s also collecting rock samples for a future collect and return mission to bring them back to Earth for analysis.

Identifying ancient Chinese astronomical events represents a fascinating aspect of modern astrophysics. Chinese astronomers maintained meticulous records of celestial events for over two millennia, documenting everything from "guest stars" (temporary bright objects) to comets, eclipses, and planetary conjunctions with remarkable precision and consistency. These records provide a wonderful archive of observations that often predate Western records by centuries. However, translating them and identifying their true nature presents significant challenges: ancient terminology must be translated, coordinate systems converted, and the nature of transient events determined from often brief descriptions. When successfully identified these observations can provide crucial data for understanding a variety of events but when unidentified can provide a head scratching mystery that lasts for decades, even centuries.

Of the roughly 6,000 exoplanets we've discovered, a significant number are in the apparent habitable zones of their stars. Most are giant planets; either gas giants like Jupiter and Saturn, or ice giants like Uranus and Neptune. Could some of those have habitable exomoons?

Astronomers with the Event Horizon Telescope have developed a new way to observe the radio sky at multiple frequencies, and it means we will soon be able to capture color images of supermassive black holes.

The field of exoplanet studies has grown by leaps and bounds in the past twenty years. To date, over 5,900 planets have been confirmed in more than 4,400 planetary systems. Astronomers have even confirmed the presence of a multi-planet system around Proxima Centauri, the closest star outside the Solar System. And yet, astronomers have not confirmed the presence of any exoplanets around Alpha Centauri, the binary system located about 4.344 light-years from Earth (which forms a trinary with Proxima Centauri).

Twenty years ago, the US Congress instructed NASA to find 90% of near-Earth asteroids threatening Earth. They've made progress finding these asteroids that orbit the Sun and come to within 1.3 astronomical units of Earth. However, they may have to expand their search since astronomers are now finding asteroids co-orbiting Venus that could pose a threat.

Whenever scientists present new research showing potential biosignatures on an exoplanet, follow-up articles spread like ripples on a pond. Mainstream media usually runs with it, which shows how the issue captures people's attention. The issue of life on other worlds is a compelling one. This is what happened recently with the exoplanet K2-18b.

A new study suggests that unseen geologic activity may lurk just below the thin crust of Venus.