NASA's Jet Propulsion Laboratory News and Features 9 Aug 2018, 17:47 UTC Imagine a place where the weather forecast is always the same: scorching temperatures, relentlessly sunny, and with absolutely zero chance of rain. This hellish scenario exists on the permanent daysides of a type of planet found outside our solar system dubbed an "ultrahot Jupiter." These worlds orbit extremely close to their stars, with one side of the planet permanently facing the star. What has puzzled scientists is why water vapor appears to be missing from the toasty worlds' atmospheres, when it is abundant in similar but slightly cooler planets. Observations of ultrahot Jupiters by NASA's Spitzer and Hubble space telescopes, combined with computer simulations, have served as a springboard for a new theoretical study that may have solved this mystery.
NASA's Chandra X-ray Observatory 9 Aug 2018, 15:00 UTC This image shows data from a massive observing campaign that includes NASA's Chandra X-ray Observatory. These Chandra data have provided strong evidence for the existence of so-called intermediate-mass black holes (IMBHs). Combined with a separate study also using Chandra data, these results may allow astronomers to better understand how the very largest black holes in the early Universe formed, as described in our latest press release.
NASA's Goddard Space Flight Center 8 Aug 2018, 15:14 UTC The Sun contains 99.8 percent of the mass in our solar system. Its gravitational pull is what keeps everything here, from tiny Mercury to the gas giants to the Oort Cloud, 186 billion miles away. But even though the Sun has such a powerful pull, it's surprisingly hard to actually go to the Sun: It takes 55 times more energy to go to the Sun than it does to go to Mars. Why is it so difficult? The answer lies in the same fact that keeps Earth from plunging into the Sun: Our planet is traveling very fast — about 67,000 miles per hour — almost entirely sideways relative to the Sun. The only way to get to the Sun is to cancel that sideways motion.
ESO Top News 8 Aug 2018, 10:00 UTC A glittering host of galaxies populate this rich image taken with ESO’s VLT Survey Telescope, a state-of-the-art 2.6-m telescope designed for surveying the sky in visible light. The features of the multitude of galaxies strewn across the image allow astronomers to uncover the most delicate details of galactic structure.
ESA Top News 6 Aug 2018, 07:40 UTC On 6 August of 2014, after a decade of travelling through interplanetary space, ESA’s Rosetta spacecraft arrived at its final target: Comet 67P/Churyumov-Gerasimenko (67P/C-G). The mission was the first to successfully land on a comet when it sent the lander Philae down to the surface a few months later, while the orbiter studied 67P/C-G in detail before the mission’s end on 30 September 2016. Over its lifetime Rosetta extensively mapped the comet’s surface, which has since been divided into 26 geological regions named after Ancient Egyptian deities. The entire comet has been likened to a duck in shape, with a small ‘head’ attached to a larger ‘body’.
New Horizons 4 Aug 2018, 05:09 UTC Using telescopes to watch the distant Kuiper Belt object Ultima Thule pass in front of star on Aug. 3-4, observing teams in Senegal and Colombia report that they've gathered data on New Horizons' next flyby target.
NASA's Goddard Space Flight Center 3 Aug 2018, 13:14 UTC Obtained for a research program on star formation in old and distant galaxies, this NASA/ESA (European Space Agency) Hubble Space Telescope image taken with the Wide Field Camera 3 (WFC3) demonstrates the immense effects of gravity; more specifically, it shows the effects of gravitational lensing caused by a galaxy cluster called SDSS J1152+3313.
National Radio Astronomy Observatory (NRAO) 2 Aug 2018, 22:33 UTC Astronomers using the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) have made the first radio-telescope detection of a planetary-mass object beyond our Solar System. The object, about a dozen times more massive than Jupiter, is a surprisingly strong magnetic powerhouse and a “rogue,” traveling through space unaccompanied by any parent star.
NASA's Spitzer Space Telescope 2 Aug 2018, 18:34 UTC Thin, red veins of energized gas mark the location of one of the larger supernova remnants in the Milky Way galaxy in this image from NASA's Spitzer Space Telescope.