Convert Gigayears to Attoseconds
Convert Gigayears (Ga) to Attoseconds (as) instantly and accurately.
Conversion Formula
as = Ga × 3.155695200e+34
About Gigayears
A gigayear (1 Ga) = 10⁹ yr ≈ 3.156 × 10¹⁶ s - the timescale of stellar evolution and cosmology. Universe age: 13.787 ± 0.020 Ga (Planck CMB). Sun: 4.603 Ga old; red giant in ~5 Ga. A 0.1 M☉ red dwarf lives ~10,000 Ga. Uranium-238 half-life = 4.468 Ga (used in radiometric dating). Proton decay (GUT prediction): ~10³⁴ yr = ~10²⁵ Ga. 1 Ga = 10⁹ yr.
About Attoseconds
An attosecond (as) = 10⁻¹⁸ s - the timescale of electron dynamics in atoms. The Bohr-model orbital period in hydrogen is ~152 as. Electron tunnelling through atomic potential barriers takes a few hundred as. The 2023 Nobel Prize in Physics (Agostini, Krausz, L'Huillier) honoured methods for generating sub-100 as pulses via high-harmonic generation in Ti:sapphire lasers. 1 as = 10⁻¹⁸ s = 1,000 zs.
Quick Reference Table
| Gigayears (Ga) | Attoseconds (as) |
|---|---|
| 1 Ga | 3.156 × 1034 as |
| 2 Ga | 6.311 × 1034 as |
| 5 Ga | 1.578 × 1035 as |
| 10 Ga | 3.156 × 1035 as |
| 25 Ga | 7.889 × 1035 as |
| 50 Ga | 1.578 × 1036 as |
| 100 Ga | 3.156 × 1036 as |