The interstellar comet 3I/ATLAS, the third confirmed visitor from another star system, reappeared visible after orbiting the Sun at high speed. Observed by the Hubble Telescope in July 2025, the 11 km diameter object travels at 210,000 km/h and has changed color three times. Astronomers monitor the more than 7 billion-year-old celestial body to obtain data about its origin.
The comet emerged with intense brightness and radiated coma, confirming survival of the solar approach. Images captured on July 21 show characteristic blue traces.
- Current speed: 130 thousand mph
- Estimated width: 7 miles (11 km)
- Origin: Distant Oort Cloud
Hubble observations reveal changes
Scientists from NASA and ESA analyze the images processed by Joseph DePasquale. The comet changed hue due to the release of gases and dust.
Researchers emphasize that the object is not an alien ship, but carries valuable information from a remote star system.
Another comet ATLAS appears in the skies
C/2025 K1 (ATLAS) also survived perihelion and displays a rare golden color. Astronomers attribute the hue to the low ratio of gas to dust.
The celestial body originates from the Oort Cloud and offers clues about conditions at the edge of the Solar System. Photographs by Dan Bartlett capture an extensive wavy tail.
Unprecedented mapping of distant exoplanet
Researchers used James Webb to create a 3D map of the planet WASP-18B, 400 light years away. The method measured variations in light during eclipses by the host star.
Observations at different wavelengths made it possible to reconstruct the complete surface. Results published in Nature Astronomy represent an advance in exoplanetology.
Data indicate an extreme atmosphere with temperatures exceeding 1,000°C. Technique paves the way for studies of Earth-like worlds.
Global warming exceeds Paris Agreement target
UNEP report confirms that global average temperature will exceed 1.5°C before 2035. Greenhouse gas emissions continue to rise despite commitments.
The document reinforces the need for immediate cuts to avoid more serious scenarios. Leaders prepare for COP30 in Brazil, where they will discuss new goals.
Previous studies already indicated that the carbon budget would be exhausted in a few years. Record increase in CO2 was recorded last month.
Chinese astronauts remainhundred at Tiangong
Three taikonauts from the Shenzhou-20 mission are stranded on the Chinese space station. Return capsule suffered debris impact hours before scheduled landing.
Wang Jie, Chen Zhongrui and Chen Dong have occupied Tiangong since April 24th. Authorities investigate damage and set new return date.
New command at NASA
President Trump reappointed Jared Isaacman to head the US space agency. Billionaire ally of Elon Musk proposes business model with outsourcing of missions.
Appointment follows previous withdrawal in February 2025. Leaked memo details NASA’s transformation into more efficient operation.
Isaacman has participated in private missions to orbit and advocates acceleration of space programs.
Spider Megacity Discovery
Researchers found a colony of 111,000 spiders in a sulfuric cave on the Albania-Greece border. Web formed may be the largest recorded to date.
Dark and toxic environment is home to a dense population of arachnids. Study details organization of the collective structure.
Mayan ruin reveals giant cosmogram
Sítio Aguada Fénix, in Mexico, represents a Mayan cosmological vision on a monumental scale. Area measuring 9 by 7.5 km includes cross platform discovered by archaeologists.
ConstructionCollective uction occurred 3 thousand years ago and united communities. Structure resembles representations of the Mayan universe.
AI Creativity Debate
Nature report questions the creative capacity of artificial intelligence. Current models reproduce human standards without genuine innovation.
Experts disagree about the possibility of machines overcoming limitations. Discussion involves data parasitism trained on human works.
Theoretical Black Hole Experiment
Physicist Jonas Enander describes the process of falling into a black hole in a new book. Extreme gravitational effects progressively distort time and space.
External observer sees victim frozen in the event horizon. Internal perspective reveals gradual spaghettification until singularity.