Hosted by Lester Nare and Krishna Choudhary, this story unpacks the discovery of 3I/Atlas — the third confirmed interstellar object to pass through our solar system. Captured by Hubble, JWST, TESS, and ESA orbiters, Atlas is moving at 61 km/s and may be older than our Sun. We explore why its bizarre composition excites astronomers, how Mars orbiters and future missions will gather data, and what it means for understanding the diversity of planetary systems beyond our own.

Summary

• 3I Atlas confirmed as only the third interstellar object observed

• Discovered by the ATLAS program in Chile on July 1, 2025

• Speed: 61 km/s, ensuring it won’t remain in the solar system

• Unique CO₂-to-water ratio (8:1) unlike solar system comets

• What this reveals about its birth environment and possible age (~7B years)

• Why orbiters at Mars and ESA probes will be critical for further study

• Broader significance: sampling galactic diversity one visitor at a time

Show Notes

• Space.com — 3I Atlas Coverage