Articles tagged with Sun
A study by Princeton University and the Institute for Advanced Study suggests that Earth's varying reflections can provide clues about distant, potentially habitable planets. By analyzing changes in light over time, scientists may gain insights into a planet's weather, oceans, or even plant life.
A team of astronomers has discovered a Jupiter-size planet in a nearly circular orbit around the nearby star 47 Ursae Majoris, located about 51 light years from Earth. The new planet is at least three-fourths the mass of Jupiter and orbits the star at a distance that would place it beyond Mars but within the orbit of Jupiter.
Hyperion successfully navigated through rough terrain, including scree slopes and mud flats, covering a distance of 9.1 kilometers in an extended experiment. The technology has proven fundamental ideas for robotic explorers to operate at the poles of the moon or in polar regions of Mars.
Scientists have successfully observed an optical coronal line from iron ions in a star called CN Leonis, located 8 light-years away. This achievement marks the first time such a detection has been made outside of our solar system and opens up new avenues for studying stellar cycles.
The discovery of 70 prehistoric stone ax heads at the Grossmann site near O’Fallon, Illinois, sheds new light on Cahokian society. The pristine ax heads, made from St. François basalt, suggest a possible connection to social status and wealth.
Researchers confirm long-standing mystery of magnetic reconnection, a process that generates solar flares and aurorae. The event was observed by NASA's Wind spacecraft as it flew through the Earth's magnetotail, revealing collisionless processes that explain its fast rate.
Astronomers using Chandra X-ray Observatory have discovered that protostars, the youngest stage of star formation, are marked by powerful X-rays from plasma ten times hotter and 100 to 100,000 times brighter than our Sun's flares. This has provided the closest look yet at the youngest stars in the Universe.
The American Geophysical Union is seeking nominations for the 2001 Sullivan and Perlman Awards, which recognize outstanding reporting in science journalism that makes geophysical science accessible to the general public. Nominations must be submitted by January 13, 2001.
The Ulysses spacecraft detected a dramatic change in solar wind and magnetic field lines, revealing comet tails that are likely billions of miles long. This finding opens up new ways to study comets and gain insights into the solar system's birth.
Chemist Richard L. Hahn's work with solar neutrinos reveals insights into the sun's behavior and duration. His research uses giant tanks to detect neutrino collisions, which may lead to a re-evaluation of fundamental theories.
Astronomers have observed five young, massive star clusters in a distant galaxy, offering a glimpse into the earliest stages of stellar nursery development. The discoveries, estimated to be around 500,000 years old, provide valuable insights into how globular clusters form and evolve over billions of years.
Guillermo Gonzalez argues that the Sun's exceptional characteristics made intelligent life emerge on Earth. The Sun is unusually massive and has a stable light output, making it an ideal place for life to thrive. This rules out over 95% of stars in the Galaxy as potential candidates.
NASA scientists have discovered an anomaly in Pioneer 10's trajectory, suggesting the spacecraft may be experiencing an unexplained force pulling it towards the Sun. The effect has been observed in multiple Pioneer and Ulysses probes, challenging current theories of gravity.
Scientists from Montana State University and European colleagues have made a breakthrough in understanding the sun's corona temperature. By analyzing data from the Japanese/US/UK space satellite Yohkoh, they found that magnetic field clashes likely cause the heating of giant loops of material above the sun's surface.
Astronomers have discovered eta Carinae, a bright stellar object in the Milky Way, to be the most massive binary star system ever known. The two stars, each weighing about 70 times that of the sun, orbit each other every 5.5 years, causing predictable spectral changes.
Researchers found cyanogen gas in Comet Hale-Bopp, suggesting the same process controls its evolution regardless of distance from the sun. The discovery supports a key theory explaining how comets release this gas.
Researchers use infrared spectrometer to study Comet Hale-Bopp, revealing an abundance of silicate grains with crystalline and amorphous structures. The findings provide valuable clues about the comet's makeup and potential origins of the solar system.
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...
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.
The SOHO mission has provided stunning images of the Sun's south polar region, revealing that even in quiet areas, there is tremendous activity. The observations suggest that solar plumes are associated with small regions of high magnetic activity and are more dynamic than previously thought.