All Day

IAU Symposium 407: Origins 2026

Paris, France

Those in fields of chemistry, biology, planetary science and astrophysics are invited to explore the origins of life and habitability on Earth and beyond. The program will feature the latest discoveries in prebiotic chemistry, the evolution of early life, and habitability across the Solar System and exoplanets, as well as […]

Earth at Aphelion, 1.0167 AU from the Sun

Global / Inter-Global

Occurs 07:30 HST / 17:30 UTC; Earth aphelion is the point in its elliptical orbit where it is farthest from the Sun, occurring annually in early July; at aphelion , Earth is about 94.5 million miles from the Sun, or roughly 3% farther than its closest point, perihelion, in January.

Launch Pegasus XL / Swift Rescue Mission

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Omelek Island (~9 ° N), Kwajalein Atoll, Marshall Islands

The mission aims for the LINK spacecraft to rendezvous with the Neil Gehrels Swift Observatory craft and boost its orbit, under a Small Business Innovation Research Phase 3 contract between NASA and Katalyst Space Technologies. Air launch-to-orbit is how the Pegasus XL operates. It can carry up to 443 kg […]

Launch Falcon 9 / Transporter 17

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SLC-4E (~35°N), Vandenberg SFB CA, USA

Dozens of microsatellites and nanosatellites for commercial and government customers to launch to Sun-Synchronous Orbit.

Spacetide 2026: Unlocking Space for All Humanity

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Tokyo, Japan

Featured speakers this year include Astronaut Naoko Yamazaki, JAXA President Hiroshi Yamakawa, Aarti Holla-Maini of UNOOSA; expecting 2,000+ participants from 35+ countries, with focus areas commercial space and cislunar economy. SPACETIDE seeks to provide a platform for global leaders across diverse industries to tackle shared challenges and co-create a sustainable […]

Origins 2026: IAU Commission F3 Astrobiology Meeting

Paris, France

Bringing together experts in chemistry, biology, planetary science and astrophysics to explore the origins of life and planetary habitability on Earth and beyond. At Museum National d'Histoire Naturelle and Sorbonne Université.

€110 – €620