NASA's Aqua satellite provided infrared imagery of the latest tropical cyclone in the South China Sea.
Researchers from Rice University, UCLA, Michigan State and the University of New Mexico have discovered a planetary-scale tug-of-war between life, deep Earth and the upper atmosphere that is expressed in atmospheric nitrogen. The research appears this week in Science Advances.
New NASA mission results show that tornado-like swirls of space plasma create tumultuous boundaries in the near-Earth environment, letting dangerous high-energy particles slip into near Earth space.
With a miniaturized space probe capable of being accelerated to a quarter of the speed of light, we could reach Alpha Centauri, our nearest star, in 20 to 50 years. However, without a mechanism to slow it down, the space probe could only collect data from the star and its planets as it zoomed past. A theoretical physicist at Goethe University Frankfurt has now examined whether interstellar spacecraft can be decelerated using 'magnetic sails.'
If someone cries 'Eureka!' because it looks like oxygen appeared in Earth's ancient atmosphere long before the body of evidence indicated, be careful. If it was a chromium isotope system reading that caused the enthusiasm, it might need to be curbed.
Two recent studies show how solar flares exhibit pulses or oscillations in the amount of energy being sent out. Such research provides new insights on the origins of these massive solar flares and the space weather they produce. This is key information as humans and robotic missions venture out into the solar system, farther and farther from Earth.
Objects scattered to the inner region of the Solar System by Jupiter's growth brought most of the water now found on Earth. Authors of an journal Icarus article describe a computational model which simulates the gravitational interaction between celestial bodies during the era of planet formation, also providing basis for the hypothesis of the dragging of water-rich "planetesimals".
Using more than half a century of observations, Japanese astronomers have discovered that the microwaves coming from the Sun at the minimums of the past five solar cycles have been the same each time, despite large differences in the maximums of the cycles. This is an important step in understanding the creation and amplification of solar magnetic fields, which generate sunspots and other solar activity.
There are too many high-energy positrons in the cosmic rays reaching the Earth. These positrons (particles that are antimatter equivalents of electrons) could be being produced by pulsars in our vicinity. The most recent measurements from the HAWC Observatory in Mexico have practically excluded this possibility, strengthening the competing and much more exotic hypothesis concerning the origin of the excess positrons.
The excess positrons arriving at Earth must have a more exotic origin than nearby pulsars, report researchers.