Giant 'Senior Citizen' Sunspot Makes Third Circumnavigation of Sun, Could Break Century-Long Record
Sunspot AR 14100
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Kilimanjaro's Giant Senecios: The Strange Plants That Thrive on Africa's Highest Mountain
Giant groundsel (Dendrosenecio kilimanjari) is a unique plant found only on the slopes of Mount Kilimanjaro. (Photo credit: Autumn Sky Photography via Alamy) On the slopes of the mid-height of this mountain grows an unusual plant not seen anywhere else…
New research suggests that invisible radiation leaking from private satellite “mega constellations” like SpaceX's Starlink network could ruin radio astronomy forever.
(Image credit: Tobias Rötzsch) When you look up at the sky on a clear night shortly after one of SpaceX's many Falcon 9 rocket launches, you might notice a bright line of lights moving rapidly across the sky. The phenomenon,…
How many satellites can fit in Earth orbit? And how many do we really need?
The number of spacecraft orbiting the Earth is rapidly increasing thanks to the development of private satellite “mega constellations”. (Image credit: Shutterstock) The number of satellites orbiting Earth has more than doubled in the past five years and is likely…
Not 'little red dots' or roaring quasars: James Webb telescope discovers new kind of 'hidden' black hole never seen before
The James Webb Space Telescope has identified a black hole-powered quasar (pink dot in center of image) that has been around since the first billion years after the Big Bang. (Image credit: NASA, ESA, CSA, S. Lilly (ETH Zurich), D.…
The land beneath South Africa is rising every year. We finally know why.
A panoramic view of the Constantiaberg Mountains near Cape Town in South Africa. A new study suggests the country has been steadily rising between 2012 and 2020