  We present spectral analysis from XMM-Newton observations of the Vela pulsar.
We analyzed thermal emission from the pulsar dominating below ~ 1 keV since
extracted spectra are heavily contaminated by nebular emission at higher
energy. Featureless high-resolution spectra of the Reflection Grating
Spectrometer aboard XMM-Newton suggest the presence of a hydrogen atmosphere,
as previously indicated by Chandra results. Both the temperature and radius are
consistent with those values deduced from Chandra. The derived Chandra and
XMM-Newton temperature of T^{\infty} ~ (6.4-7.1)*10^5 K at its age of ~10^4
years is below the standard cooling curve.
