China’s Moon Probe to Seek First Lunar Rocks Retrieval for a Nation Since 1970s

China plans to launch an unmanned spacecraft to the moon this week to bring back lunar rocks in the first attempt by any nation to retrieve samples from Earth’s natural satellite since the 1970s.

The Chang’e-5 probe, named after the ancient Chinese goddess of the moon, will seek to collect material that can help scientists understand more about the moon’s origins and formation. The mission will test China’s ability to remotely acquire samples from space, ahead of more complex missions.

If successful, the mission will make China only the third country to have retrieved lunar samples, following the United States and the Soviet Union decades ago.

Since the Soviet Union crash-landed the Luna 2 on the moon in 1959, the first human-made object to reach another celestial body, a handful of other countries including Japan and India have launched moon missions.

In the Apollo programme, which first put men on the moon, the United States landed 12 astronauts over six flights from 1969 to 1972, bringing back 382 kg (842 pounds) of rocks and soil.

The Soviet Union deployed three successful robotic sample return missions in the 1970s. The last, the Luna 24, retrieved 170.1 grams (6 ounces) of

Poker Devices And Accessories For Your House Sport

The Samsung Omnia II represents the following technology of Samsung’s common all-in-one handset. That’s the thought behind Silent Pocket’s line of RFID-blocking merchandise like The Suit, which seems to be like a fairly typical smartphone sleeve however, in keeping with the seller, consists of shielding materials that can block all of the aforementioned sorts of signals. Name it a tinfoil hat to your smartphone. I spent some time with the Surface Laptop computer following Microsoft’s event and it is actually a stunner. Weighing just 2.76 kilos, the laptop is lighter than Apple’s (AAPL) 2.96-pound MacBook Air. That’s not an enormous distinction, however it’s certainly noticeable.

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Practice makes perfect – the initial measurement of the light speed

“It seems as though we must use sometimes the one theory and sometimes the other, while at times we may use either. We are faced with a new kind of difficulty. We have two contradictory pictures of reality; separately neither of them fully explains the phenomena of light, but together they do.” Albert Einstein

The light has fascinated people for centuries from both scientific and philosophical perspectives. The history of light’s nature and its speed is so old that this topic was touched by Greek scientists Empedocles and Aristotle. Empedocles suggested that light moves, and it needs time to travel, while Aristotle believed that light travels instantaneously.

Who was right? Which theory was more correct? Is it possible to count the lights traveling time? The answer lies in the future; today, we know that light is a wave with a known frequency. Let’s take a journey that humanity had to take to obtain this knowledge.

Image credit: E. Klejman

Dual nature of the light 

The light nature has excited research since ancient times. According to Maxwell’s Theory light is a propagating electromagnetic wave called electromagnetic radiation [1], while Quantum Theory suggests that light consists of tiny portions of energy called