With the blight ravaging Earth in the 21st century and no immediate solution being found to eliminate it, it is safe to speculate that Earth did not in fact survive. The doctor said the station Cooper is in, is orbiting Saturn.
Earth is completely devoid of plant life, with little to no oxygen available. Vast, barren plains, bare mountains, abandoned cities and towns, and lifeless oceans. With no trees to slow down the wind, dust storms blow fiercely, and are strong enough to demolish abandoned houses.
In this film last sources of food on earth have been devastated by blight (a plague) and making it uninhabitable. This is why they were looking for a plan that could save human kind: a new planet to colonize. It is safe to speculate that earth did not in fact recover and essentially died.
She saved humanity by getting most of us to the stars before the planet was uninhabitable. They're living on a ring world made to look like the prairies at the end.
Does Cooper ever make it back to Earth in Interstellar?
Cooper is able to relay important information to Murphy (Jessica Chastain), which, in turn, helps her save humanity from extinction. When Cooper is ejected from the tesseract, he is found and returned to a colony of Earth, only to discover that 90 years of Earth-time has passed since he left, though he has barely aged.
It's Reality! Scientists FINALLY Sees What's Inside Black Hole!
Why was Murph so old at the end of Interstellar?
Ok, now follow a few steps. Murph was 10 years old when Cooper left. Cooper traveled for 2 years to the wormhole and subsequently lost 23 years in gravitational time dilation on Miller's planet. When he returns to the Endurance he receives Murph's message that she is now the same age as Cooper when he departed.
The fifth-dimensional beings are not aliens; the fifth-dimensional beings are humans from the far, far, far future, who have evolved beyond the limits of the third dimension. These far future humans are now helping to create themselves by giving humanity the wormhole to a new galaxy.
Later, after Cooper allows himself to fall into Gargantua in order to gather the data necessary for Murphy to solve Dr. Brand's equation, he enters the Tesseract, where he realizes that unknown beings who created the wormhole are in fact humans from the distant future.
Cooper and Brand were on Miller's planet for 23 years, four months and eight days in Earth time - meaning they were only on Miller's Planet for roughly three hours and seventeen minutes. Listen closely to the ticks during the Miller's planet scene - they occur around every 1.5 seconds, representing one day on Earth.
Due to Gargantua's massive gravitational pull, “every hour on that planet is seven years on Earth”. After a massive tidal wave hits the spacecraft and delays their exit, they find that 23 years have passed on Earth.
On his deathbed, Professor Brand confesses to Murph that he lied about his Plan A's prospects – that he failed to “reconcile relativity to quantum mechanics” and his gravity project needs much more data. She takes on the project herself and beams out the bad news to space, where Coop and Amelia receive it.
What was found by NASA that appeared 48 years ago in Interstellar?
Soon, no crop will ever grow on Earth & the species will starve to death. Brand reveals that a wormhole, apparently created by an alien intelligence (& first discovered 48 yrs ago), leads to new planets that may offer hope for survival.
TARS relays the quantum data to Cooper in Morse code. Cooper in turn relays the quantum data to Murph, in Morse code, through the hands of a wrist watch. Murph somehow knows it's her father relaying quantum data to her through the watch.
I think if he'd somehow made himself stay (through binary, etc), he would have altered the future and he would have disappeared into the blackhole forever, but the fact that he gave the co-ordinates of the NASA base and sent himself to space, he stayed in existence even though he does alter the...
Mann was marooned on this planet for 35 years, as evidenced by the 23-year time dilation on Miller, the two-year trip to Saturn and the launch of the Lazarus missions which predated Endurance's launch by ten years.
How old in Earth years is Cooper when he wakes up?
According to some sources, Cooper was born in 2032, making him roughly 35 when the Endurance launches in 2067. He is 124 on Cooper Station in the year 2156.
Einstein's theory of general relativity mathematically predicts the existence of wormholes, but none have been discovered to date. A negative mass wormhole might be spotted by the way its gravity affects light that passes by.
Through Dr. Mann says, “I'm here for you,” while Cooper dies, Mann can't tolerate the suffering and turns off the speaker in his helmet. At this point, the film cuts to Murph turning her jeep into the family cornfield, where she will set fire to the corn in order to force Tom to leave.
While fans may continue to hope for an Interstellar 2, the absence of concrete plans or release dates suggests that the future of the franchise is uncertain.
Sadly, Jesse died from a lung ailment caused by the deteriorating conditions on Earth. He was buried on the Cooper farm near Erin Cooper (his grandmother) and Donald Cooper (his great-grandfather).
We are shown that middle-aged Murph comes back to her room and tries to re-enact the part when she had locked herself up and got the message "STAY" from the ghost. She opens her notebook and right after that, she realises that the ghost was her father.
