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Astronomers have long thought it takes millions of years for the seeds of stars like the Sun to come together. Clouds of mostly hydrogen gas coalesce under gravity into prestellar cores dense enough to collapse and spark nuclear fusion, while magnetic forces hold matter in place and slow down the process. But observations using the … Read more
There are a lot of unexplained objects out there in the Universe, and astronomers have just found another one – a strange, dusty object that may be causing its host star to dim by up to 75 percent. Often, when we see something block out the light of its star it’s an exoplanet or … Read more
The image above may look like a fairly normal picture of the night sky, but what you’re looking at is a lot more special than just glittering stars. Each of those white dots is an active supermassive black hole. And each of those black holes is devouring material at the heart of a galaxy … Read more
In 2014, amateur astronomers in New Zealand glimpsed a flare of light emanating from the constellation of Centauri. NASA later confirmed this blaze was a massive supernova explosion from another galaxy an incredible 57 million light-years away from our Milky Way. “Dedicated amateur astronomers often make intriguing discoveries – particularly of fleeting astronomical phenomena … Read more
It might not look like much, but here is the first monumental image from the Double Asteroid Redirection Test (DART). Earlier this month, a circular door covering the aperture of its DRACO telescopic camera was opened, allowing the camera to take its first image. Now, imagine what the camera’s last image will be like: … Read more
On the grand cosmic scale, our little corner of the Universe isn’t all that special – this idea lies at the heart of the Copernican principle. Yet there’s one major aspect about our planet that’s peculiar indeed: Our Sun is a yellow dwarf. Because our home star is what we know most intimately, it … Read more
After numerous delays, the biggest space telescope ever has blasted off on Christmas Day, and will begin its science mission in mid 2022 Space 25 December 2021 By Leah Crane The James Webb Space Telescope sits atop an Ariane 5 rocket on the launchpad in French Guiana on 23 December P PIRON/ESA/CNES/Arianespace The James Webb … Read more
The forthcoming launch of the James Webb Space Telescope offers unprecedented new opportunities for astronomers. It’s also a timely opportunity to reflect on what previous generations of telescopes have shown us. Astronomers rarely use their telescopes to simply take pictures. The pictures in astrophysics are usually generated by a process of scientific inference and … Read more
Free-floating planets are hard to spot, but astronomers have bagged a large haul by looking for candidates in a nearby star-forming region Space 22 December 2021 By Alex Wilkins Artist’s impression of a rogue planet COSMIC DANCE Team Astronomers have spotted what seems to be at least 70 planets drifting through space by themselves. These … Read more
According to the Observer’s Handbook of the Royal Astronomical Society of Canada, there are 11 meteor showers that are considered to be the “principal” displays of the year. In order to make the list, a particular meteor shower must produce at least 10 meteors per hour at maximum. As it turns out, within a span … Read more