# Observation of light bending spacetime [duplicate]

Has radiation or energy bending spacetime ever been observed?

If not, is it likely that it ever will, assuming current technology?

Note: This is not a question of space bending light, but of light bending space.

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## marked as duplicate by John Rennie, DavePhD, Neuneck, Kyle Kanos, JimJun 4 at 14:39

@JohnRennie Nice find; that definitely answers the question. Thanks. –  Veedrac Jun 4 at 11:06

Compare the energy of a gamma-ray photon: $E\approx 10^6\, \mathrm{eV}$ to the energy of a typical terrestrial object $E=mc^2\approx 1 \mathrm{kg} \cdot c^2 \approx 5\times 10^{35} \mathrm{eV}$. We have trouble measuring the gravitational field of 1 kg objects, so a single photon is out of the question.