Arianespace’s Ariane 5 rocket with NASA’s James Webb Space Telescope onboard, is rolled out to the launch pad, Thursday, Dec. 23, 2021. via NASA https://ift.tt/3spxSv8
Are you still looking for that perfect holiday gift for an astronomer? If your night sky is dark and horizon clear enough, the Solar System may have done your shopping for you. Send them outside after sunset to see three planets and a comet. In this snapshot of the December solstice evening sky from the […]
In this image, the COWVR and TEMPEST instruments are shown in the trunk of the cargo craft. via NASA https://ift.tt/32cxo0P
Birds don’t fly this high. Airplanes don’t go this fast. The Statue of Liberty weighs less. No species other than human can even comprehend what is going on, nor could any human just a millennium ago. The launch of a rocket bound for space is an event that inspires awe and challenges description. Pictured here, […]
The Earth’s solstices come twice a year. For the Northern Hemisphere, this year’s winter solstice happens on Dec. 21. via NASA https://ift.tt/3pg7e5R
Welcome to December’s solstice, first day of winter in the north and summer for the southern hemisphere. Astronomical markers of the seasons, solstice and equinox dates are based on the Sun’s place in its annual journey along the ecliptic, through planet Earth’s sky. At this solstice, the Sun reaches its maximum southern declination of -23.5 […]
These blueprints of the James Webb Space Telescope were created as a prop for a video series. via NASA https://ift.tt/3EeAMF9
This picture was supposed to feature a comet. Specifically, a series of images of the brightest comet of 2021 were being captured: Comet Leonard. But the universe had other plans. Within a fraction of a second, a meteor so bright it could be called a fireball streaked through just below the comet. And the meteor’s […]
It is not a coincidence that planets line up. That’s because all of the planets orbit the Sun in (nearly) a single sheet called the plane of the ecliptic. When viewed from inside that plane — as Earth dwellers are likely to do — the planets all appear confined to a single band. It is […]
The first identified compact galaxy group, Stephan’s Quintet is featured in this eye-catching image constructed with data drawn from the extensive Hubble Legacy Archive. About 300 million light-years away, only four of these five galaxies are actually locked in a cosmic dance of repeated close encounters. The odd man out is easy to spot, though. […]