Articles tagged with Planet Earth
Scientists will observe how airglow changes during the eclipse to estimate oxygen densities at different altitudes in the upper atmosphere. The Polar spacecraft, equipped with a UVImager and other cameras, will take images of the Earth's shadow as the Moon's shadow moves across the globe.
The U.S. Geological Survey presents a forum on reducing losses from natural disasters, featuring California's experience in earthquake risk management and mitigation. The event aims to share lessons learned from the Northridge earthquake of 1994 and explore potential models for nationwide disaster reduction plans.
The Near Earth Asteroid Rendezvous (NEAR) spacecraft successfully completed its Earth swingby, putting it on course for a historic encounter with asteroid 433 Eros. Scientists released the first images from the mission on January 26, providing valuable insights into the spacecraft's performance and trajectory.
The Mechanics of Granular Materials (MGM) experiment aims to expand investigations into soil mechanics started on STS-79 in 1996. The new flight will run twice as many tests under various experimental conditions, providing insights into the behavior of soils under low-confining pressures.
Researchers use numerical simulations to show connection between Earth's changing shape and gravitational effects of other bodies in the Solar System. The study reveals that changes in the Earth's axial tilt can produce large changes in climate.
University of Michigan researchers use ultra-high speed custom software to simulate coronal mass ejections (CMEs) and their effects on the Earth's magnetosphere. The simulations, run on a supercomputer, can predict solar wind events up to 17 times faster than real time.
Researchers at NASA's Marshall Space Flight Center found that the Earth's polar fountains of energized gas are a significant source of material for the magnetosphere, contradicting previous assumptions. The discovery was made using a device called TIDE, which neutralizes spacecraft plasma sheaths to detect low-energy ions.
A University of Colorado at Boulder research team found that Earth is alternately peppered by extremely high-energy electrons from the sun and Jupiter. These 'killer electrons' are accelerated to energies thousands of times higher than usual near Earth, posing a threat to spacecraft and satellites.
Researchers detected intense X-rays in seven bursts, each lasting for half an hour, emanating from the Earth's upper atmosphere. The high-energy bursts were recorded during the day with no auroral activity overhead, posing a scientific mystery that scientists are struggling to explain.
A new MIT study suggests that a rapid reduction in global ocean circulation 118,000 years ago may have thrown the climate system back into an ice age. The finding has important implications for understanding the potential impact of increased greenhouse forcing on the oceans.
University of Michigan scientists estimate moon age between 4.52 billion to 4.50 billion years ago through tungsten isotope analysis. The data supports the hypothesis that the moon was formed from a large object colliding with Earth.
The University at Buffalo's National Center for Earthquake Engineering Research has been awarded a $10 million grant by the NSF to study advanced technologies for minimizing earthquake damage. The center aims to quantify the earthquake threat, develop new technologies, and improve emergency response through the use of advanced technolo...
Astronomers using the Hubble Space Telescope have discovered a large crater on asteroid Vesta with an estimated diameter of 285 miles and 8 miles deep. The crater's impact debris is believed to be a source of special types of meteorites, including those found in Hawaii.
Astronomers have found evidence that small, evaporating ice particles in the tail and surrounding the nucleus of comet Hyakutake are responsible for most of the water and other gases seen from Earth. The discovery provides new insights into how comets survive orbits around the sun without being wasted away by solar radiation.
Researchers have developed a two-part seismic device that can detect ground vibrations given off by an approaching tornado, allowing users to seek shelter. The 'sensor' portion of the device is designed to be affordable for everyone and can provide up to five minutes warning before a tornado strikes.
Astronomers have detected a giant solar eruption with particles hurtling towards the Earth. The NASA POLAR spacecraft will monitor the Earth's aurora in real-time, capturing enhanced activity on Wednesday afternoon.
A revised ocean depth model developed by Northwestern University geologists significantly better fits observed data, correcting inconsistencies in existing models. By adjusting the assumed thickness of the lithosphere to 95 kilometers, the new model accurately predicts ocean depths surrounding the Hawaiian Islands.
Microbial subsurface life is likely to be found on Mars and other planetary bodies in our solar system. The theory proposes that life evolved from the inside out, using rocks for oxygen, and suggests that petroleum has come up from great depths, not from biological sediments.
Dr. Michael Carr presents a case for the possibility of life on Mars, citing similarities with early Earth's hydrothermal environments and recent discoveries of organic compounds in Martian meteorites. The USGS has initiated a Mars exploration program to study the planet's climate history and distribution of water.
The NSF is installing 250 ground-based monuments to track satellites and study earth movements in Southern California, enabling scientists to follow Earth's crust movements with unprecedented detail. The network will provide valuable insights into earthquake potential and strain buildup, helping to identify areas of high seismic activity.
A Purdue University researcher has discovered that spacecraft can 'surf' through space at libration points, which could lower costs of planetary missions. Libration points are locations in the solar system where gravitational forces cancel each other out, creating stable orbits for spacecraft.
A paper by Peter D. Usher presents evidence that Shakespeare's Hamlet is an allegory for the competition between cosmological models of Thomas Digges and Tycho Brahe. The play dramatizes the struggle to discover the real picture of the universe from appearances in the sky. Hamlet favors the Diggesian model, which is the forerunner of m...
Researchers measured steady, imperceptible movements of faults since the 1994 Northridge earthquake using GPS data from over a dozen receivers. The force of 'after-slip' has added about six inches to nearby Granada Hills, highlighting the difficulty in fully accounting for strain leading up to earthquakes.
Scientists at Boston University have captured high-resolution images of the Earth's outer atmosphere using the POLAR ENA Imaging Proton Spectrometer. These images allow for the tracking of magnetic storms in space and provide new insights into the relationship between the Sun and Earth.
A recent earthquake in Peru has bolstered a researcher's theory that large earthquakes will not occur in a specific region near the quake site. The study found a correlation between plate shape and seismic activity, identifying areas of low seismicity called seismic gaps.
A new study suggests the Yucatan asteroid impact was particularly deadly to North America due to its oblique angle, spreading energy northwest. The severe extinction intensity was highest downrange of the impact in North America.
Researchers suggest comets consist of same material that formed stars, potentially delivering organic matter to Earth. The detection of hydrogen isocyanide in Comet Hyakutake supports the idea that interstellar gases were incorporated into comet nuclei.
Researchers analyzed sediment layers deposited by tides to study the moon's retreat from Earth. The study found that a day on Earth was approximately 18 hours long 900 million years ago, with the moon moving away at a constant rate. The analysis also revealed changes in tidal patterns over time.