  We report on the detection of ultra-fast outflows in the Seyfert~1 galaxy Mrk
590. These outflows are identified through highly blue-shifted absorption lines
of OVIII and NeIX in the medium energy grating spectrum and SiXIC and MgXII in
the high energy grating spectrum on board Chandra X-ray observatory. Our best
fit photoionization model requires two absorber components at outflow
velocities of 0.176c and 0.0738c and a third tentative component at 0.0867c.
The components at 0.0738c and 0.0867c have high ionization parameter and high
column density, similar to other ultra-fast outflows detected at low resolution
by Tombesi et al. These outflows carry sufficient mass and energy to provide
effective feedback proposed by theoretical models. The component at 0.176c, on
the other hand, has low ionization parameter and low column density, similar to
those detected by Gupta et al. in Ark~564. These absorbers occupy a different
locus on the velocity vs. ionization parameter plane and have opened up a new
parameter space of AGN outflows. The presence of ultra-fast outflows in
moderate luminosity AGNs poses a challenge to models of AGN outflows.
