( ( The team ) ( ( will ( ( ( make ( further observations ) ) ( with ( ( ( ground-based telescopes ) and ) ( the ( Hubble ( Space Telescope ) ) ) ) ) ) ( to ( confirm ( whether ( ( the quasar ) ( is ( ( ( as ( it appears ) ) or ) ( if ( ( the image ) ( is ( being ( ( distorted ( by gravity ) ) ( from ( ( ( another object ) , ) ( ( an effect ) ( known ( as ( gravitational lensing ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN team)) (VP (MD will) (VP (VB make) (NP (JJ further) (NNS observations)) (PP (IN with) (NP (NP (JJ ground-based) (NNS telescopes)) (CC and) (NP (DT the) (NNP Hubble) (NNP Space) (NNP Telescope)))) (S (VP (TO to) (VP (VB confirm) (SBAR (IN whether) (S (NP (DT the) (NN quasar)) (VP (VBZ is) (SBAR (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ appears)))) (CC or) (SBAR (IN if) (S (NP (DT the) (NN image)) (VP (VBZ is) (VP (VBG being) (VP (VBN distorted) (PP (IN by) (NP (NN gravity))) (PP (IN from) (NP (NP (DT another) (NN object)) (, ,) (NP (NP (DT an) (NN effect)) (VP (VBN known) (PP (IN as) (NP (JJ gravitational) (NN lensing))))))))))))))))))))) (. .)))
The team will make further observations with ground-based telescopes and the Hubble Space Telescope to confirm whether the quasar is as it appears or if the image is being distorted by gravity from another object, an effect known as gravitational lensing.
(ROOT (S (NP (DT A) (NN telescope)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB make) (S (NP (NP (NNS objects)) (PP (IN in) (NP (NN space)))) (VP (VB appear) (ADVP (RBR closer))))))))) (. .)))
A telescope is used to make objects in space appear closer.