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4Astronomy is a search engine built for people who look up. We combine multiple indexes, curated astronomy sources, and AI systems to return results tailored to astronomy topics. Use 4Astronomy to find observing guides, research papers, image archives, mission information, community resources, and products relevant to amateur and professional astronomy. Part of the 4SEARCH network of topic specific search engines.
Latest News & Web Pages
Huge asteroid will skim terrifyingly close to Earth tomorrow
42+ min ago (365+ words) A newly discovered asteroid will pass Earth at a distance of roughly 90, 000 km (56, 000 miles) tomorrow, in what astronomers describe as one of the closest safe flybys on record. The object, designated 2026 JH2, will make its closest approach on Monday, May 18, 2026, at…...
Astronomer's get best look yet at surface of exoplanet
7+ hour, 1+ min ago (10+ words) Press Reader...
Satellite launches may be dimming sunlight on Earth and polluting the upper atmosphere, study warns
47+ min ago (335+ words) A new scientific study has raised concerns about the environmental impact of the rapidly expanding satellite and rocket launch industry, warning that emissions from launches could increasingly pollute the upper atmosphere and slightly reduce the amount of sunlight reaching Earth....
Dante's Inferno describes Lucifer falling from Heaven " or an asteroid impact? - News Room USA | LNG in Northern BC
2+ hour, 55+ min ago (842+ words) Lucifer falls from Heaven and creates Hell" Lucifer's fall is not just a theological image, but a violent shock that excavates Hell within the Earth and projects the matter that gives rise to the mountain of Purgatory. The similarities with…...
Moon, Venus and Jupiter to dazzle the skies this week. How to watch in India
58+ min ago (444+ words) Step outside just after sunset this week and face west. Between May 18 and 20, the night sky is arranging a celestial show that requires no equipment, no expertise and no rural escape. The best window is roughly 30 to 60 minutes after sunset,…...
May is a month of spectacular astronomical phenomena, awaiting the rare Blue Moon.
1+ week, 6+ day ago (189+ words) From the Eta Aquarids meteor shower to the planetary 'triangle of light,' the May sky is vibrant with astronomical phenomena, including the rare Blue Moon....
New asteroid discovered approaching Earth, visible through telescopes.
3+ day, 20+ hour ago (28+ words) The newly discovered asteroid, 2026 JH2, is attracting the attention of astronomers as it is expected to fly past Earth at an extremely close distance on May 19th....
Why does the Moon look different from different places on Earth?
3+ week, 5+ day ago (28+ words) The viewing angle and geographical location allow the Moon to 'flip upside down,' changing its shape and the direction of light between different regions of the Earth....
Japan and Europe launch spacecraft to track asteroid 'death' asteroid Apophis.
3+ week, 21+ hour ago (21+ words) Once considered one of the greatest threats to Earth, Apophis will fly past Earth in 2029, visible to the naked eye....
Preview: Sky Conclude Four-Game West Trip with Tilt Against Lynx
2+ hour, 45+ min ago (279+ words) The Chicago Sky showed they are a resilient team, constantly fighting in the face of adversity in their first three games of the season. On Sunday, concluding a four-game road trip, they'll face another team that can comfortably say the…...