Solar System

Hubble has captured stunning images of interstellar comet 3I/ATLAS, revealing twin wobbling jets, offering rare insight into its rotation and internal structure as it exits the solar system.

Are colours disappearing from the Sun’s Light? Here is what's really happening

Scientists have discovered missing colours in the Sun’s light spectrum. Hundreds of dark absorption lines remain unexplained, hinting towards hidden processes in our nearest star’s mysterious atmosphere.

NASA's Parker Solar Probe spots solar wind making a surprising U-turn near the Sun

NASA’s Parker Solar Probe reveals the sun recycling erupting plasma, as solar material bursts outward then curls back, reshaping magnetic fields and offering new clues for forecasting future space weather.

Comet 3I/ATLAS brightens and turns greener as Earth encounter approaches

New telescope images show interstellar comet 3I/ATLAS brightening and turning green after solar heating, raising questions about its chemistry and whether surprising outbursts may appear as it nears Earth soon.

Comet 3I/ATLAS grows more active in new NASA, ESA images ahead of close Earth encounter

Discovered in late June and confirmed as the third known interstellar object in July, 3I/ATLAS has raced through the inner solar system at roughly 130,000 mph.

Comets, stars, galaxies and more: NASA's stunning astronomy images for December 2025

Each day, we dive into NASA’s newest releases to bring you the most mesmerising sights from across the universe. From glowing comets to distant galaxies, these daily images reveal the beauty, mystery and scale of the cosmos in ways that never fail to amaze us. Stay with us as we explore December’s most breathtaking celestial highlights, one remarkable picture at a time.

When two hot stars brushed by: Ancient stellar flyby left its mark near our Solar System

For decades, astronomers have detected an unusual mix of ionised gas in the local clouds. Roughly 20% of hydrogen and 40% of helium appear ionised.

From Titan to Europa: 8 most stunning Moons of the Solar System

Eight distant worlds hold secrets that still puzzle scientists and spark endless curiosity. Each moon offers a strange allure, inviting questions about what lies beneath, beyond, and waiting to be discovered.

Study suggests icy moons with boiling oceans could support life

Some icy moons may have subsurface oceans that boil near thin ice layers. Despite this, life could survive deeper below, say recent scientific findings.

Astronomers spot possible primordial cluster beyond Neptune

Astronomers discovered a primordial cluster beyond Neptune in the Kuiper Belt. Stable, ancient icy bodies may reveal planetary migration and the Sun’s early formation environment.

NASA releases long-delayed, striking close-ups of Comet 3I/ATLAS, ending ‘alien’ theories — See images here

The comet 3I/Atlas is the third interstellar visitor seen here. The earlier objects were 1I/ʻOumuamua in 2017 and 2I/Borisov in 2019.

ISRO releases striking new image of Comet 3I/ATLAS from Mount Abu telescope

Scientists at the Physical Research Laboratory used their 1.2-metre telescope to observe comet 3I/ATLAS.

Mysterious interstellar visitor 3I/ATLAS appears to change colour for third time with sudden brightening

3I/ATLAS is the third-known interstellar object to enter our solar system. It was discovered on 1 July 2025 by the ATLAS telescope in Chile, travelling at over 210,000 kilometres per hour.

Alleged NASA leak of 3I/ATLAS image and Japanese ‘breathtaking view’ create online frenzy

Scientists believe 3I/ATLAS contains significant amounts of carbon dioxide, similar to comets formed in cold, distant star systems.

3i/atlas: What today’s ‘Manhattan-size’ interstellar visitor really means

A quick explainer on how close it gets, who can see it, and why scientists care.

3I/ATLAS sending Fibonacci Signal 8 • 13 • 8 • 5 • 13 • 8 with mysterious message ‘The Gate Awaits,’ new claims suggest

3I/ATLAS made its closest approach to Earth on 29 October 2025, coming within 1.8 astronomical units, or around 167 million miles.

Astronomers discover second-fastest asteroid orbiting the Sun

Astronomers have detected a skyscraper-sized asteroid hidden near the Sun, racing around our star extremely fast and raising planetary defence concerns.

700-metre ‘twilight’ asteroid found inside Venus’s orbit, circles Sun in just 128 days

The asteroid is estimated to measure about 700 meters in diameter. Its orbit crosses Mercury’s path, and it remains largely hidden from Earth’s view in the Sun’s glare.

Solar tornadoes could trigger hidden geomagnetic storms

New models show interplanetary solar tornadoes may trigger geomagnetic storms capable of disrupting satellites, electricity networks and global communications.

Astronomers reveal evidence for a hidden 'Planet Y' beyond Neptune

Planet Y has not been directly observed, but its influence is apparent. Researchers studied roughly 50 icy objects beyond Neptune and found unexpected orbital inclinations.

Interstellar Comet 3I/ATLAS zips past Sun, to be monitored by Mars and Jupiter spacecraft

The European Space Agency is using Mars and Jupiter missions to monitor the comet in real time. Observing from beyond Earth allows instruments to track the comet even when Earth-based telescopes lose sight.

Comet 3I/ATLAS may be alien probe as it is larger than expected, says Harvard scientists

The object, named 3I/ATLAS, was first spotted by NASA on 1 July 2025. It is only the third confirmed interstellar visitor after ‘Oumuamua in 2017 and 2I/Borisov in 2019. Classified as a comet, 3I/ATLAS has unusual motion that has drawn global scientific attention.

NASA shares Saturn’s rings shifting as equinox marks seasonal change

Saturn’s rings orbit along the planet’s equator. Their appearance depends on the tilt of Saturn’s spin axis toward the Sun.

Signs of flowing water found in near-Earth asteroid Ryugu that changed its core, scientists say

Researchers studied samples returned by Japan’s Hayabusa2 mission in 2020. The spacecraft visited the near-Earth asteroid between 2018 and 2019.

Interstellar Comet 3I/ATLAS unleashes bright green glow in stunning new images

Interstellar Comet 3I/ATLAS undergoes a striking green transformation, captivating scientists and astronomy enthusiasts alike with its unprecedented color change.