... The shells of hydrogen and helium form a planetarynebula, leaving the core exposed. ... The hydrogen and helium of the planetarynebula eventually break away from the white ...
... 2003 A Compact X-Ray Source and X-Ray Jet within the PlanetaryNebula Menzel 3. ... 2002 On the Asymmetries of Extended X-Ray Emission from PlanetaryNebula. ... of Extended X-Ray Emission from the PlanetaryNebula NGC 7027 by the Chandra X-Ray ...
... 2003 A Compact XRay Source and XRay Jet within the PlanetaryNebula Menzel 3. ... 2002 On the Asymmetries of Extended XRay Emission from PlanetaryNebula. ... of Extended XRay Emission from the PlanetaryNebula NGC 7027 by the Chan dra XRay ...
... 2003 A Compact X-Ray Source and X-Ray Jet within the PlanetaryNebula Menzel 3. ... 2002 On the Asymmetries of Extended X-Ray Emission from PlanetaryNebula. ... of Extended X-Ray Emission from the PlanetaryNebula NGC 7027 by the Chandra X-Ray ...
... 2003 A Compact XRay Source and XRay Jet within the PlanetaryNebula Menzel 3. ... 2002 On the Asymmetries of Extended XRay Emission from PlanetaryNebula. ... of Extended XRay Emission from the PlanetaryNebula NGC 7027 by the Chandra XRay ...
... 2003 A Compact X-Ray Source and X-Ray Jet within the PlanetaryNebula Menzel 3. ... 2002 On the Asymmetries of Extended X-Ray Emission from PlanetaryNebula. ... of Extended X-Ray Emission from the PlanetaryNebula NGC 7027 by the Chandra X-Ray ...
... 2003 A Compact XRay Source and XRay Jet within the PlanetaryNebula Menzel 3. ... 2002 On the Asymmetries of Extended XRay Emission from PlanetaryNebula. ... of Extended XRay Emission from the PlanetaryNebula NGC 7027 by the Chandra XRay ...