levantamentos astronômicos

Observações sistemáticas do céu que catalogam e rastreiam corpos celestes ao longo do tempo.

Articles about levantamentos astronômicos

Science
Hipparchus’s Lost Star Map Recovered

Hipparchus’s Lost Star Map Recovered
Researchers at SLAC/Stanford used powerful X-ray beams to read hidden Greek astronomical notes beneath a medieval palimpsest, recovering star coordinates from Hipparchus—the oldes…
Space
Space as a Sticky Fluid?

Space as a Sticky Fluid?
A late‑2025 arXiv preprint proposes that the vacuum behaves like a viscous, elastic medium with 'spatial phonons'—a phenomenological model that the author says can reconcile tensi…
Space
X‑Ray Map Reveals Interstellar 'Tunnel'

X‑Ray Map Reveals Interstellar 'Tunnel'
A new 3D map built from SRG/eROSITA X‑ray data shows low‑density channels in the Local Hot Bubble — including a conspicuous 'tunnel' toward Centaurus — and points to how ancient s…
Technology
3I/ATLAS Is Not an Alien Probe

3I/ATLAS Is Not an Alien Probe
Comet 3I/ATLAS—only the third confirmed interstellar object to visit our solar system—has been scanned by major radio and optical facilities; scientists report no signs of enginee…
Space
Cloud 9: A Failed Galaxy Revealed

Cloud 9: A Failed Galaxy Revealed
Using Hubble and radio telescopes, astronomers have confirmed a starless, gas-rich dark-matter cloud — nicknamed Cloud‑9 — that matches long-standing theoretical predictions of a …
Space
SPHEREx Maps Sky in 102 Infrared Colors

SPHEREx Maps Sky in 102 Infrared Colors
NASA's SPHEREx mission has completed a full-sky survey in 102 infrared bands, producing a multilayered cosmic atlas that scientists say can turn a flat star chart into a 3D map of…