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SPHEREx maps brown dwarfs, the cooling objects between planets and stars

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NASA’s SPHEREx observatory has taken the “fingerprints” of brown dwarfs across the nearby cosmic neighborhood. Too massive to be traditional gas planets but too small to sustain the nuclear fusion that defines stars, these objects cool and shrink over time while spinning faster as they age.

Discovered 2026-10-15T06:36:09.752436-07:00 | 2026-10-15T06:36:09.752436-07:00

Briefing

What Hype is tracking

  • SPHEREx’s observations add data on brown dwarfs, objects that occupy the mass boundary between giant planets and stars.
  • Their changing temperature, size and spin as they age makes them useful targets for studying how substellar objects evolve.

Reported By

Universe Today
Sources Tracked
1
First Seen
2026-10-15T06:36:09.752436-07:00
Latest Update
2026-10-15T06:36:09.752436-07:00
Coverage
Space

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