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Our existence doesn’t really make sense. When the Universe was created, matter and a substance called antimatter should have obliterated each other. But that didn’t happen. If scientists can unravel the mysteries of antimatter, it could help us understand why there is life on this planet and possibly on planets elsewhere.
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While routinely scanning the sky for the burnt-out remnants of dying stars, scientists stumbled upon a strange cosmic signal. After running a few more tests, they were stunned.
One of their observed stellar corpses, a white dwarf star more than 1,000 light-years from Earth that spins once every 15 minutes, had a peculiar appearance. Its orb-like surface possessed two different elements on either of its sides, weirdly divided like a basketball sliced down the middle.
Astronomers have discovered a new type of stellar object that could change their understanding of extreme celestial bodies in the universe.
Initially, Curtin University doctoral student Tyrone O’Doherty spotted a spinning celestial space object in March 2018. The unfamiliar object released giant bursts of energy and beamed out radiation three times per hour.
In those moments, it became the brightest source of radio waves viewable from Earth through radio telescopes, acting like a celestial lighthouse.
Astronomers have spotted the coldest star-like body on record found to produce emissions at radio wavelengths.
Cooler than a campfire here on Earth and smaller than Jupiter, the faint object called T8 Dwarf WISE J062309.94−045624.6 is an ultra-cool brown dwarf, often referred to as “failed stars” because, despite usually being larger than gas giants, they are still smaller than stars.
Researchers using Chile’s Atacama Large Millimeter/submillimeter Array of telescopes (ALMA) may have found a rare “sibling” sharing the same orbit of a Jupiter-like planet about 370 light-years away from Earth in the Centaurus constellation. The newly discovered twin shares the same orbit as PDS 70b around a young star in the PDS 70 system.
The closest cosmic explosion to Earth in the last 10 years became a record breaker for the Search for Extraterrestrial Intelligence Institute (SETI).
The supernova, designated (SN) 2023ixf, was first spotted on May 19, 2023, by Japanese amateur astronomer Koichi Itagaki. Just an hour after this manifestation, amateur astronomers taking part in SETI and Unistellar’s Cosmic Cataclysms program were on the case.
A mysterious alignment of stellar “ghosts” from dead stars haunts the heart of the Milky Way, and scientists may finally know why.
These cosmic specters exist in the form of planetary nebulas, clouds of gas that are expelled by dying stars at the end of their lives. These can resemble butterflies or hourglasses with the smoldering remains of the star at their heart. The sun, when it runs out of fuel for nuclear fusion at its core and after it has swelled out as a red giant and swallowed the inner planets in around 5 billion years, will leave similar gaseous remains around a white dwarf star.
Where did all this come from? In every direction we care to observe, we find stars, galaxies, clouds of gas and dust, tenuous plasmas, and radiation spanning the gamut of wavelengths: from radio to infrared to visible light to gamma rays. No matter where or how we look at the universe, it’s full of matter and energy absolutely everywhere and at all times. And yet, it’s only natural to assume that it all came from somewhere. If you want to know the answer to the biggest question of all — the question of our cosmic origins — you have to pose the question to the universe itself, and listen to what it tells you.
