In this program, a 1.2-meter-aperture telescope will be sent into a Halo orbit at the second Lagrangian point of the Sun-Earth system. With the help of high-precision astrometry, it will survey about 100 Sun-like stars within 32 light years away from the solar system, and detect the num...
With the help of high-precision astrometry, it will survey about 100 Sun-like stars within 32 light years away from the solar system, and detect the number, planetary mass, and 3D orbits of the nearby planets. "So far, we have conducted a series of preliminary studies...
According to a new study, stars like our own may not be as stable as previously thought. While observing EK Draconis, a G1.5V yellow dwarf located 110.71 light-years away, an international team of astronomers witnessed a massive coronal mass ejection that dwarfed anything we’ve ev...
The sun is a star, just like the other stars we see in the evening sky. The difference is distance: The other stars we see are light-years away, while our sun lies only about eight light minutes away — many thousands of times closer. Officially, the sun is classified as a G2 ...
The Milky Way galaxy is approximately 100,000 light-years in diameter It takes our solar system approximately 230 million years to complete one orbit around the rotational center of the Milky Way There are hundreds of billions of stars in the Milky Way galaxy, and most of those stars have th...
The fact that the gas around LMC68 is metal-deficient also means it contains fewer elements like magnesium and calcium compared to typical stars. When this gas goes through the thermonuclear runaway process (the explosion in the nova), the lack of these elements is amplified, leading to...
Scientists are using powerful radio telescopes to listen to signals from about 1 000 stars all within 100 light years of earth. In addition they will scan(扫视)the entire sky to “listen” to radio messages from more distant stars. Using a computer they will be able to monitor more than ...
This topical collection summarizes recent advances in observing and modeling irradiance variations of the Sun and Sun-like stars, emphasizing the links bet
Their gifts over the years are the fruit bowls on my tables, the lamps that light my bedside reading, and the Portuguese guitar on many of my albums. I’ve got a new Sun Kil Moon album due out April 12, 2019, entitled I Also Want to Die in New Orleans. The album was originally ...
What is much less clear are the properties and location of the acceleration regions and the processes operating within them. In the corona this is in part due to a low density, leading to low intensity EM emission, as well as a lack of diagnostics sampling the high temperatures expected to...