Science
You can finally see a cosmic supernova explode with your own eyes
A ghostly 'hand' moving across the universe has just shed new light on the death of massive stars. The spectacular structure is the ejecta of a core-collapse supernova, and by taking images of it over more than 14 years, astronomers have been able to watch it blast into space at 4,000 kilometers (2,485 miles) per second.
By sondra mallen4 years ago in Earth
Those underground 'lakes' on Mars are getting more and more mysterious, study shows
In 2018, scientists made a discovery that could change our understanding of Mars, the dusty, dry red ball. Radar signals reflected from just below the planet's surface showed a shiny patch, exactly the same as a subsurface pool of liquid water. Subsequent searches uncovered more shiny patches, indicative of an entire network of subterranean lakes.
By sondra mallen4 years ago in Earth
If large carnivores go extinct, must the ecosystem collapse?
Either because of their large size or because humans are at the top of the food chain, we pay more attention to large carnivores that are also higher up the food chain. As a result, we subconsciously believe that large carnivores are more important in the ecosystem than small, herbivorous animals. One cannot help but wonder if the ecological balance will be upset if large carnivores become extinct, and if the ecosystem will eventually become irreparable and collapse.
By Milton Braganza4 years ago in Earth
How did mankind come to be? Understanding human origins in one breath
How did mankind come to be? I believe that different people have different ideas, different disciplines have given answers, and different ancient civilizations have their myths. This time let's talk about how paleoanthropology, which specializes in this issue, really sees this question.
By Madison Hart4 years ago in Earth
Why is the silly and unreturnable tilapia not extinct by now?
The silly fish living in the sea, even if the predator nibbles, there is no way to escape, so silly and no power to fight back fish, why is not extinct until now? This fish is called a tilapia, it is slowly moving forward in the water, a seal in its vicinity, slowly approaching the tilapia, after seeing the right moment, the tilapia is a bite, directly biting out a defect, the tilapia can only silently bear, the predator's attack, without the power to fight back, become a "walking buffet ".
By Milton Braganza4 years ago in Earth
230 pilot whales stranded, half are dead, or produce whale explosion! How scary is the whale explosion scene?
About 230 pilot whales were stranded on the beach near the entrance to Port Macquarie, Australia, and the relevant departments rushed to the scene to work together to rescue them, but the local government department introduced that half of the stranded pilot whales have died.
By Mark Rovich4 years ago in Earth
