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Earth recorded its shortest day on record on June 29, completing one rotation in 1.59 milliseconds in under 24 hours. Scientists aren’t sure what caused the slightly faster rotation, but speculate it could be related to climate change, tides, or even the Earth’s layers. The irregular rotation created the need for something known as a leap second, a second added to Coordinated Universal Time (UTC) which keeps our clocks as close to solar time – the movement of the sun – as possible. Watch the latest News on Channel 7 or stream for free on 7plus >> So far, Earth’s rotation has mostly slowed over time, so only positive leap seconds were added to the atomic clock to compensate, but it was only recently revealed that on June 29, Earth’s rotation was recorded to be spinning faster than usual. “If Earth’s fast rotation continues, it could lead to the introduction of the first negative leap second,” a story published on the timeanddate website warns. A negative leap second is a second t

When you are asked, “What is it?” this weekend, here’s your answer: Long March 5B, a 44,000-pound rocket body spinning toward Earth. But scientists aren’t sure when and where this debris is — from the Chinese launch last Sunday Wentian space station module — about to land. The Aerospace Corporation did release the latest prediction path for the debris – with the disclaimer that it’s too early to be sure. Experts believe that 20 percent to 40 percent of the massive rocket’s body mass will survive its fiery journey through Earth’s atmosphere to the planet’s surface, but not intact. Seventy percent of the planet is covered in oceans, so the odds are that whatever remains of the rocket will land in water, but that’s not guaranteed. Shrugging in response to the potential danger of the Long March 5B debris is nothing new. Aaron Boley, co-director of the Outer Space Institute and planetary astronomer at the University of British Columbia, said about 70 percent of rockets that orbit and r

The brilliant light detected by NASA’s James Webb Telescope (JWST) three billion light years from Earth is believed to be the first $10 billion scope observation of a dying star’s explosion. Officially known as a supernova, it is the ‘last hurray’ that occurs when a star runs out of fuel. This causes the pressure to drop, where the cosmic object expands to at least five times the mass of our sun – which is about 333,000 Earths in size – and then explodes, releasing tons of debris and particles. A stellar explosion occurred in the galaxy SDSS.J141930.11+5251593, where a JWST image showed an object’s light dimming in the span of five days – a clue that fueled the supernova theory. Also of interest is the fact that JWST was not designed to find and detect new transients, Mike Engesser of the Space Telescope Science Institute (STScI), told Inverse, which first reported the discovery. Scroll down for the video Not only did James Webb see the supernova, but astronomers were baffled by

Depiction of Earth, first without an inner core; second, with a growing inner core, about 550 million years ago; third, with the outermost and innermost core, about 450 million years ago. University of Rochester researchers used paleomagnetism to determine these two important dates in the history of the inner core, which they believe restored the planet’s magnetic field just before the explosion of life on Earth. Credit: University of Rochester Illustration / Michael Osadciw New paleomagnetic research shows Earth’s dense core formed 550 million years ago and restored our planet’s magnetic field. The rotating molten iron in Earth’s outer core, which lies about 1,800 miles below our feet, produces our planet’s protective magnetic field, called the magnetosphere. Although this magnetic field is invisible, it is essential for life on Earth’s surface. That’s because the magnetosphere protects the planet from the solar wind—the stream of radiation from the sun. However, about 565 milli

China said it was tracking the wreckage of a large, newly launched rocket at the time reenter the earth’s atmosphere this weekend in what Beijing says will pose little risk to anyone on the ground. The Long March 5B rocket launched Sunday to deliver a laboratory module to the Chinese space station under construction, marking the third flight of China’s most powerful rocket since its maiden launch in 2020. As happened during its first two flights, the entire main core stage of the rocket – which is 100 feet (30 meters) long and weighs 22 tons (about 48,500 lb) – has reached low orbit and is expected to fall back to Earth after the atmosphere. friction drags it down, according to American experts. Ultimately, the rocket body will disintegrate as it falls through the atmosphere but is large enough that many chunks will likely survive re-entry into the debris rain over an area about 2,000 km (1,240 mi) long by about 70 km wide. based analysts said on Wednesday. The likely location of th

This illustration shows the concept of several robots working together to transport rock and soil samples to Earth collected from the surface of Mars by NASA’s Mars Perseverance rover. Credit: NASA/JPL-Caltech NASA has completed a system requirements review for the Mars Sample Return Program, which is close to completing the conceptual design phase. During this phase, the program team has evaluated and refined the architecture to return scientifically selected samples, which are currently in the process of being collected by NASA’s Perseverance rover in the Red Planet’s Jezero Crater. The architecture for the campaign, which includes contributions from the European Space Agency (ESA), is expected to reduce the complexity of future missions and increase the likelihood of success. “The conceptual design phase is when every aspect of the mission plan is put under the microscope,” said Thomas Zurbuchen, associate administrator for science at NASA H

Yet another out-of-control Chinese rocket sparked concern – a year after one of Beijing’s spacecraft rained debris over the Indian Ocean. Experts fear that part of the 21-ton Long March 5B rocket, which was launched into space on Sunday, may fail to burn completely as it re-enters Earth’s atmosphere. Then it will fall to the surface in an uncertain location and at high speed. Although the chances of debris hitting an inhabited area are very low, many experts think that China is taking an unnecessary risk. The country’s newest rocket was launched from the Wenchang launch site in the southern island province of Hainan over the weekend. The craft carries a new solar-powered laboratory, the Wentian experimental module, which will be added to China’s growing Tiangong Space Station. However, experts worry that part of the rocket’s core stage could fall to Earth – in a repeat of China’s launch last May that saw debris strewn across the Indian Ocean. At the time, NASA Administrator Bill Nelson

With satellites in orbit since 1972, the Landsat program is the longest running Earth observation program. The Earth imaging program, originally created to investigate Earth’s landmass, has contributed to a wide range of subjects, from the natural sciences to the social sciences. Since the first satellite imagery of Landsat 1 in 1972, several Landsat satellites have been launched with the ability to take increasingly detailed images of our world. These two images show an increase in image resolution and sensor data quality on the Landsat Silicon Valley imagery located in Northern California. The image on the left is a Landsat 1 image obtained in 1972 and the image on the left is a Landsat 8 image obtained in 2016. Landsat 1 (left) satellite image from 1972 and Landsat 8 (right) satellite image from 2016 in Silicon Valley in Northern California. Landsat Satellite Launch Timeline Landsat launch timeline. Graphics: Caitlin Dempsey. Landsat 1 The first Landsat satellite was launched on

Researchers from Japan’s Kyoto University, in a joint effort with Kajima Construction, are dealing with plans to introduce a space-powered Bullet Train that could revive the space travel industry. As a collaboration with Kajima Construction, researchers at Kyoto University, Japan have announced the construction of an artificial space region between the interplanetary train connecting Earth, Moon, and Mars, as the world sees the beginning of the next Space Race. It seems that sci-fi films could turn into the real world if Japanese technology was accepted. Humans can traverse different planets on the train soon! Indeed, you read it correctly. Japan has spread plans in an attempt to send humans to Mars and the Moon. In a press conference last week, the group announced its futuristic intention to encourage the life structure of the ‘Glass’ region that duplicates Earth’s gravity, terrain and climate to prevent human musculoskeletal ‘weakening’ in non-existent and low-gravity environments

While climate change is taking effect everywhere on Earth, the Arctic Circle is feeling its effects primarily, in the form of melting glaciers, melting ice sheets, and decreasing sea ice. Key players in climate change include clouds covering the Earth’s surface and microscopic aerosols in the air called ice core particles that seed the formation of ice in these clouds. This dance of ice cores, cloud cover and heat all play a major role in climate. But the all-important ice-forming aerosols, which can be mineral dust, microbes, or ocean spray, are rarely studied in the Arctic – where they need to be studied most – because little is known about their effects there, and not many scientists venture further north. . However, Colorado State University scientists did. In 2019, an intrepid team including atmospheric research scientist Jessie Creamean boarded a ship, sailed north, collected thousands of samples of air, seawater, sea ice, snow, and meltwater, and brought home the physical evi

Astronomers at MIT and elsewhere have detected a strange and persistent radio signal from a distant galaxy that appears to flicker with surprising regularity. The signal is classified as a rapid radio burst, or FRB — a very powerful burst of radio waves of unknown astrophysical origin, which usually lasts a few milliseconds at most. However, this new signal lasted up to three seconds, about 1,000 times longer than the FRB average. Within this window, the team detected bursts of radio waves that repeated every 0.2 seconds in a clear periodic pattern, similar to a heartbeat. The researchers have labeled the signal FRB 20191221A, and it is currently the most durable FRB, with the clearest periodic pattern, detected to date. The source of the signal lies in a distant galaxy, a few billion light years from Earth. Exactly what the source is remains a mystery, although astronomers suspect the signal could be from a radio pulsar or a magnetar, both types of neutron stars – the cores of gian