Briefly summarize what this scientific news article says about the phenomenon of gravitational lensing caused by massive cosmic objects like galaxy clusters.

Here's the source text:
The 1915 theory, which is occasionally called Einstein's geometric theory of gravity, predicts that, as bowling balls placed on a trampoline create a depression, objects with mass cause the very fabric of space-time to warp. This curvature gives rise to the force of gravity. And the greater the mass of a cosmic object, the more extreme the warping of space it causes.

Light travels across the universe in straight lines, but when it encounters a warp caused by a truly massive object, its path is curved. When the warping object is between Earth and a background object, it can curve light in such a way that the apparent position of the background object is shifted.

But when the intermediate or "lensing object" is truly massive — like a monstrous cluster of galaxies, for example — light from the background source takes a different amount of time to reach Earth depending on how close it passes to the natural cosmic lens. 

This effect, called gravitational lensing, can make single objects appear at multiple points in the sky, often in stunning arrangements called Einstein rings and Einstein crosses. It can also cause background objects to appear amplified in the sky, a powerful effect that astronomers use to observe distant and early faint galaxies.

The distortion caused by massive clusters like eMACS J1823.1+7822 can also help astronomers study mysterious dark matter, which accounts for around 85% of the mass in the universe but is invisible because it does not interact with electromagnetic radiation. Because dark matter does interact gravitationally, however, the lensing of light by a galaxy or galactic cluster can help researchers map the distribution of dark matter.
system
sankshep main yah sankshep main ki yah vaigyanik samachar lekh gallexi clusters jaisi vishaal brahmadia vastuon ke kaaran hone vaale gurutvkarshan lencing kii ghatana ke bare main kya kahata he.

yahan strot paath he:
1915 kaa siddhant, jise kabhi-kabhi oinstin ke jyamitiya siddhant ko gurutvkarshan kaha jaataa he, yah bhavishyavaanee karata he ki, jaisaa ki ek trempolin par rakhi gai gendbaaji gendon ko ek avsaad paidaa karata he, dravyaman ke saath vasteen spes-time ke bahut kapade kaa kaaran banati hai.yah vakrata gurutvkarshan ke bal ko janm detii he.or ek brahmadia vastu kaa dravyaman jitna adhik hoga, antariksh ke adhik charam ke kaaran yah hoga.

lite sidhe linon main brahmad main yatra karti he, lekin jab yah vastav main bade paimaane par vastu ke kaaran hone vaale taana kaa saamana karata he, to iskaa maarg ghumaavdaar hota he.jab waring object prithvi or prishthbhumi kii vastu ke bich hota he, to yah prakaash ko is tarah se vakr kar saktaa he ki prishthbhumi object kii spasht sthiti ko sthanantarit kar diya jaataa he.

lekin jab madhyavarti yaa "lencing object" vastav main bade paimaane par hota he - jaise akashgangaon ke ek rakshasi cluster kii tarah, udhaaharan ke liye - prishthbhumi strot se prakaash prithvi tak pahunchane ke liye ek alag samay letaa he, jo is baat par nirbhar karata he ki yah prakritik brahmadia lens ke paas kitna kareeb he.

yah prabhaav, jise gurutvkarshan lencing kaha jaataa he, akaash main kai binduon par ekal vastuon ko prakat kar saktaa he, aksar oinstin rings or oinstin cross naamak ascharyajanak vyavastha main.yah prishthbhumi vastuon ko akaash main pravardhit dikhaai dene kaa kaaran bhi ban saktaa he, ek shaktishaalee prabhaav jo khagolavidon kaa upyog dur or shuruaati behosh akashgangaon kaa nirikshan karne ke liye karte hai.

EMACS J1823.1+7822 jaise bade paimaane par samoohon ke kaaran hone vaali virupan bhi khagolavidon ko rahasyamay andhere padaarth kaa adhyayan karne main madad kar saktaa he, jo brahmad main lagbhag 85% dravyaman ke liye khaataa he, lekin adrishy he kyonki yah vidyut chumbakeey vikiran ke saath baatcheet nahin karata he.kyonki dark matter gurutvkarshan ke saath baatcheet karata he, haalanki, ek akashganga yaa galactic cluster dwaara prakaash kii lencing shodhakartaaon ko andhere padaarth ke vitaran ko map karne main madad kar sakati he.
user
yah vaigyanik samachar lekh gurutvkarshan lencing par charchaa karata he, jo bade paimaane par brahmadia vastuon ke kaaran hota he or oinstin ke gurutvkarshan ke siddhant ke anuroop he.ucch dravyaman vaali vasteen antariksh-samay ke yuddh ke kaaran halke raaston ke jhukne kaa kaaran ban sakati hai.gurutvkarshan lencing tab hoti he jab ek badi vastu prakaash ke maarg ko jhukaati he, jisase ek prishthbhumi object kii spasht sthiti main badlaav hota he.gurutvkarshan lencing tejasvi drishy prabhaav paidaa karata he jaise ki oinstin ke challe or cross.gurutvkarshan lencing khagolavidon ko dur or behosh akashgangaon ko akaash main bada dikhaai dene main madad karata he.EMACS J1823.1+7822 jaise bade paimaane par gallexi cluster vaigyanikon ko andhere padaarth ke vitaran ko map karne main madad karte hai, jo brahmad ke dravyaman kaa ek mahatvapurn hissaa banaata he.
assistant
<|system|>
</s>
<|user|>
sankshep main yah sankshep main ki yah vaigyanik samachar lekh gallexi clusters jaisi vishaal brahmadia vastuon ke kaaran hone vaale gurutvkarshan lencing kii ghatana ke bare main kya kahata he.

yahan strot paath he:
1915 kaa siddhant, jise kabhi-kabhi oinstin ke jyamitiya siddhant ko gurutvkarshan kaha jaataa he, yah bhavishyavaanee karata he ki, jaisaa ki ek trempolin par rakhi gai gendbaaji gendon ko ek avsaad paidaa karata he, dravyaman ke saath vasteen spes-time ke bahut kapade kaa kaaran banati hai.yah vakrata gurutvkarshan ke bal ko janm detii he.or ek brahmadia vastu kaa dravyaman jitna adhik hoga, antariksh ke adhik charam ke kaaran yah hoga.

lite sidhe linon main brahmad main yatra karti he, lekin jab yah vastav main bade paimaane par vastu ke kaaran hone vaale taana kaa saamana karata he, to iskaa maarg ghumaavdaar hota he.jab waring object prithvi or prishthbhumi kii vastu ke bich hota he, to yah prakaash ko is tarah se vakr kar saktaa he ki prishthbhumi object kii spasht sthiti ko sthanantarit kar diya jaataa he.

lekin jab madhyavarti yaa "lencing object" vastav main bade paimaane par hota he - jaise akashgangaon ke ek rakshasi cluster kii tarah, udhaaharan ke liye - prishthbhumi strot se prakaash prithvi tak pahunchane ke liye ek alag samay letaa he, jo is baat par nirbhar karata he ki yah prakritik brahmadia lens ke paas kitna kareeb he.

yah prabhaav, jise gurutvkarshan lencing kaha jaataa he, akaash main kai binduon par ekal vastuon ko prakat kar saktaa he, aksar oinstin rings or oinstin cross naamak ascharyajanak vyavastha main.yah prishthbhumi vastuon ko akaash main pravardhit dikhaai dene kaa kaaran bhi ban saktaa he, ek shaktishaalee prabhaav jo khagolavidon kaa upyog dur or shuruaati behosh akashgangaon kaa nirikshan karne ke liye karte hai.

EMACS J1823.1+7822 jaise bade paimaane par samoohon ke kaaran hone vaali virupan bhi khagolavidon ko rahasyamay andhere padaarth kaa adhyayan karne main madad kar saktaa he, jo brahmad main lagbhag 85% dravyaman ke liye khaataa he, lekin adrishy he kyonki yah vidyut chumbakeey vikiran ke saath baatcheet nahin karata he.kyonki dark matter gurutvkarshan ke saath baatcheet karata he, haalanki, ek akashganga yaa galactic cluster dwaara prakaash kii lencing shodhakartaaon ko andhere padaarth ke vitaran ko map karne main madad kar sakati he.</s>
<|assistant|>
yah vaigyanik samachar lekh gurutvkarshan lencing par charchaa karata he, jo bade paimaane par brahmadia vastuon ke kaaran hota he or oinstin ke gurutvkarshan ke siddhant ke anuroop he.ucch dravyaman vaali vasteen antariksh-samay ke yuddh ke kaaran halke raaston ke jhukne kaa kaaran ban sakati hai.gurutvkarshan lencing tab hoti he jab ek badi vastu prakaash ke maarg ko jhukaati he, jisase ek prishthbhumi object kii spasht sthiti main badlaav hota he.gurutvkarshan lencing tejasvi drishy prabhaav paidaa karata he jaise ki oinstin ke challe or cross.gurutvkarshan lencing khagolavidon ko dur or behosh akashgangaon ko akaash main bada dikhaai dene main madad karata he.EMACS J1823.1+7822 jaise bade paimaane par gallexi cluster vaigyanikon ko andhere padaarth ke vitaran ko map karne main madad karte hai, jo brahmad ke dravyaman kaa ek mahatvapurn hissaa banaata he.</s>
