The discovery of a dinosaur with a heart in the tail has also been revealed, and scientists now believe that Ultima Thule is more of a space pancake than a snowman.
Here are the space and science news that you might have missed this week for all things related to chocolate and roses.
This week you have to apologize for our tone. We are deeply concerned about the loss of the courageous opportunity rover. After falling silent during a planetary dust storm on Mars in June, the denial was easy. The Rover had previously survived dust storms and had even survived his twin Spirit, who was stuck on Martian soil and ended his mission in 201
Rover's last message to his team before the storm hit in full force as this week became widespread was like "My battery is weak and that's it." "No one wanted Oppy, as the team called her, to have been stranded in the storm."
Oppy's engineers sent over 800 orders to wake her up or help her, confident she could recover after surviving its original 90-day mission, which began in 2004.
The windy season came and went on Mars and ended in January, and after sending a last command this week that went unanswered, said goodbye Opportunity's NASA officially ended their mission and sent it away with a poignant and solemn reminder.
But that's not the end. NASA administrator Jim Bridenstine drew a beautiful picture of the future on Wednesday and talked about how the footprints of humans will someday be next to the rover tracks on Mars.
I hope to see you again soon, Oppy.
A Tail with Heart
Let's look at something that is happy to remove that sad rover dust from our eyes like dinosaurs and rainbows. Serious.
The day before Valentine's Day, the researchers published a study of a Titanosaurus with a heart-shaped surprise in its tail.
This Titanosaur lived in Tanzania for about 100 million years in the Middle Cretaceous, and it is the only one of its kind found. The large, long-necked dinosaur belonged to the sauropod group, the largest land animal on earth. During the late Cretaceous, when the other sauropods disappeared, the titanosaurs flourished and varied.
This titanosaur resembles the Lithostrotia species of the late Chalk titanosaurs, meaning that this was the missing early stage of development that led to a Titanosaurus variety. This fossil from southern Africa is also similar to fossils found in South America.
And this one had a tailbone shaped like a heart. No wonder then that the study was released this week, when heart-shaped was all in vogue. And it is very sexy.
Is that you, Spider-Man?
When you talk about fossils with wow factor, take a deep breath and look at it. Yes, that's the way it should look. Because this incredibly well-preserved, old spider fossil somehow had reflective eyes, and this feature is still recognizable.
These reflective structures in the eye, called Tapetum, allowed the spiders to hunt at night. Try to get this nightmarish picture out of your head.
Who wants a space pancake?
This is a pancake with texture, and we are not talking about chocolate chips here.
At first they thought it was a bowling pin. Then it was snowman. But Ultima Thule, a distant object of the Kuiper belt 4 billion kilometers away on the edge of our solar system, is neither.
"New Horizons scientists confirm that the two sections (or" lobes ") of Ultima Thule are not spherical, and the larger lobe, called the" Ultima ", is more like a giant pancake and the smaller lobe, the "Thule" is shaped like a serrated walnut, "said NASA.
Speaking to NASA was an exhausting week for the agency, in addition to saying goodbye to Opportunity (in our eyes, the damned dust is back.) The reduced Valentine's Day candy can provide emotional relaxation.)
On Wednesday, the agency announced a two-year space mission to investigate and pinpoint the beginnings and evolution of the universe n how common are the ingredients Life is within the planetary systems of our Milky Way, the Milky Way.
The spectrophotometer for the history of the universe, the epoch of reionization and the ice-explorer, nicknamed SPHEREx, is expected to be launched in 2023.
 Steps into the Past
These footprints were found just in time. Paleontologists found incredibly well-preserved 95 million-year-old dinosaur trails in Queensland. And fortunately, they managed to damage the floods.
The tracks were made by three types of dinosaurs: large sauropods, smaller ornithopods and theropod dinosaurs that were "chicken-sized".
And that's not yet everything.
If the researchers can confirm this, the dunes would be the second confirmed site in the world to harbor Neanderthal footprints. The other is the Vartop Cave in Romania.