Category Archives: Astronomy

‘Old smokers’: astronomers discover giant ancient stars in Milky Way

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Stars sat fading quietly for years before suddenly puffing out vast clouds of smoke

Astronomers have discovered a mysterious group of giant elderly stars at the heart of the Milky Way that are emitting solar system-sized clouds of dust and gas.

The stars, which have been named “old smokers”, sat quietly for many years, fading almost to invisibility, before suddenly puffing out vast clouds of smoke. The discovery was made during the monitoring of almost a billion stars in infrared light during a 10-year survey of the night sky.

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Revealed: the oldest black hole ever observed, dating to dawn of universe

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Exclusive: astronomers surprised at size of 13bn-year-old object, which raises new questions about where black holes came from

Astronomers have detected the oldest black hole ever observed, dating back more than 13bn years to the dawn of the universe.

The observations, by the James Webb space telescope (JWST), reveal it to be at the heart of a galaxy 440m years after the big bang. At around a million times the mass of the sun, it is surprisingly big for a baby black hole, raising the question of how it grew so big so quickly.

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Astronomers spot ‘overweight’ planet that appears too big for tiny host star

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Fact that planet 13 times bigger than Earth is orbiting star nine times smaller than sun shows ‘how little we know about the universe’

Astronomers have spotted an “overweight” planet that appears to be far too massive for its petite host star.

The planet, which is 13 times bigger than Earth, is orbiting a star called LHS 3154, which is nine times smaller than the sun. The planet’s heft is unremarkable in its own right, but its pairing with an ultracool dwarf star, the smallest and coldest stars in the universe, has puzzled scientists.

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‘Like a ball of fire’: Perseids meteor shower to peak this weekend

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While meteors are active from July, Perseids will be most visible in northern hemisphere this Saturday and Sunday

Stargazers will be in for a treat this weekend as the best meteor shower of the year is expected to peak.

The Perseids are named after the Greek hero Perseus because the meteor shower appears to come from the eponymous constellation.

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Euclid telescope lifts off in search of the secrets of dark universe

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European Space Agency mission launches on SpaceX rocket from Florida to shed light on dark energy and dark matter

A European-built orbital satellite was launched into space on Saturday from Florida on a mission to shed new light on dark energy and dark matter, the mysterious cosmic forces scientists say account for 95% of the known universe.

The Euclid telescope, named for the ancient Greek mathematician known as the “father of geometry”, was carried in the cargo bay of a SpaceX Falcon 9 rocket which blasted off about 11am EDT (1500 GMT) from Cape Canaveral Space Force station. A live stream of the liftoff was shown on Nasa TV.

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Supermassive black hole at heart of ancient galaxy ‘far larger than expected’

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Discovery of GS-9209, one of the furthest from the Milky Way, adds to evidence that large black holes prevent star formation, astronomers say

A supermassive black hole discovered at the heart of an ancient galaxy is five times larger than expected for the number of stars it contains, astronomers say.

Researchers spotted the immense black hole in a galaxy known as GS-9209 that lies 25bn light-years from Earth, making it one of the most distant to have been observed and recorded.

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Cosmic explosion last year may be ‘brightest ever seen’

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Astronomers say gamma-ray burst may have been result of star collapsing to form black hole

A cosmic explosion that blinded space instruments last year may be the brightest ever seen, according to astronomers.

The blast took place 2bn light years from Earth, producing a pulse of intense radiation that swept through the solar system in October last year.

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Planets aligned: how to see the astronomical phenomenon set to light up Australia’s sky

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Mercury, Venus, Mars, Jupiter and Uranus will be in alignment near the moon and visible using binoculars from Tuesday evening

A planetary alignment is set to light up Australia’s night sky.

Five planets – Mercury, Venus, Mars, Jupiter and Uranus – will be in alignment near the moon from Tuesday evening.

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How to photograph a meteor shower: where to take a photo of the Perseids meteors in Australia

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Getting a good shot is tricky so here are some tips to capture a picture of the Perseid meteor shower at its peak in August

After three meteor showers lit up the sky across eastern Australia in July, the Perseid meteor shower will peak 13 August, giving stargazers another opportunity to photograph the fireballs as they blaze across the sky.

But capturing a meteorite shower is not as easy as just taking out your iPhone and pressing the button.

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Perseid meteor shower 2022: how and where to watch in Australia

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The annual Perseids meteor shower will peak on 13 August. Find out the best time to view

After the night sky in Australia was illuminated by a trio of meteor showers – the Piscis Austrinids, the Southern Delta Aquariids and the Alpha Capricornids late last month, stargazers will be able to see the 2022 Perseid meteor shower peak on 13 August.

The Perseids are considered by Nasa to be “the best meteor shower of the year”. This year, however, they coincide with a full moon on 12 August, resulting in less than ideal viewing conditions. Due to the brightness of the Perseids, though, some meteors should still be visible in a sky illuminated by moonlight.

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Meteor shower tonight: how and where to watch the Southern Delta Aquariids and Alpha Capricornids showers in Australia and New Zealand this weekend

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New moon will provide ideal viewing conditions for the Piscis Austrinids, Southern Delta Aquariids and Alpha Capricornids meteor showers this July weekend as cosmic debris from comets enters Earth’s atmosphere, before the Perseid meteor shower peaks in August

The night sky in Australia and New Zealand is set to be illuminated by a trio of meteor showers – the Piscis Austrinids, the Southern Delta Aquariids and the Alpha Capricornids – that will peak tonight.

The meteor showers coincide with the dark night sky of a new moon on 29 July, providing ideal viewing conditions.

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Origin site of oldest Martian meteorite ‘Black Beauty’ named after WA mining town

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Researchers used AI to pinpoint the meteorite’s crater on Mars’ southern hemisphere, naming it Karratha, a city close to the Pilbara region

Artificial intelligence has helped pinpoint the exact origin site of the oldest Martian meteorite, in a discovery researchers say provides clues about the planet’s early history.

The meteorite, commonly known as “Black Beauty” and officially called Northwest Africa 7034, contains the oldest known Martian igneous material, which is approximately 4.5bn years old. It was found in the Sahara Desert in 2011.

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First images from Nasa’s James Webb space telescope reveal ancient galaxies

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The pictures show elements of the universe as they were 13bn years ago, reshaping our understanding of the cosmos

Nasa has released an image of far-flung galaxies as they were 13bn years ago, the first glimpse from the most powerful telescope ever launched into space, which promises to reshape our understanding of the dawn of the universe.

The small slice of the universe, called SMACS 0723, has been captured in sharp detail by the James Webb space telescope (JWST), showing the light from many different twinkling galaxies, among the oldest in the universe. Joe Biden, who unveiled the image at a White House event, called the moment “historic” and said it provided “a new window into the history of our universe”.

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Spirals of blue light in New Zealand night sky leave stargazers ‘kind of freaking out’

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Social media abuzz with pictures and theories about formations thought to be from exhaust plume of SpaceX rocket

New Zealand stargazers were left puzzled and awed by strange, spiralling light formations in the night sky on Sunday night.

Around 7.25pm Alasdair Burns, a stargazing guide on Stewart Island/Rakiura, received a text from a friend: go outside and look at the sky. “As soon as we actually went outside, it was very obvious what it was he was referring to,” Burns said.

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Fastest-growing black hole of past 9bn years may have been found, Australian-led astronomers say

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Scientists spot extremely luminous object powered by supermassive black hole using Coonabarabran telescope

Astronomers believe they have discovered the fastest-growing black hole of the past 9bn years.

The supermassive black hole consumes the equivalent of one Earth every second and has the mass of 3bn suns, they estimate.

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Cambridge University astrophysicist loses space project role amid Brexit row

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Nicholas Walton gives up leadership of €2.8m pan-European research after dispute over Northern Ireland protocol

A Cambridge University astrophysicist studying the Milky Way and hoping to play a major part in the European Space Agency’s (Esa) next big project has been forced to hand over his coordinating role on the scheme after the row over Northern Ireland’s Brexit arrangements put science in the firing line.

Nicholas Walton, a research fellow at the Institute of Astronomy, reluctantly passed his leadership role in the €2.8m pan-European Marie Curie Network research project to a colleague in the Netherlands on Friday.

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Starwatch: red star Antares makes striking winter appearance

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Usually twinkling in summer months, the ‘rival of Mars’ will appear clearer in still winter air

This week offers early risers a chance to see the silver moon next to the deep-red star Antares. The chart shows the view looking south from London at 0500 GMT on the morning of 24 February.

The moon will be low in the sky with an altitude of just 12 degrees; Antares will be even lower, so find the clearest southern horizon that you can. With 46.8% of its visible surface illuminated, the moon will be more or less at its last quarter phase, about to become a waning crescent.

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Scientists discover new planet orbiting nearest star to solar system

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Proxima d is the third planet to have been spotted circling Proxima Centauri four light years away

Astronomers have found evidence for a new planet circling Proxima Centauri, the nearest star to the sun.

The alien world is only a quarter of the mass of Earth and orbits extremely close to its parent star, at one tenth of the distance between the sun and Mercury, the solar system’s innermost planet.

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Astronomers discover mysterious pulsing object that may be new class of star

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Experts say object is a match for predicted class of neutron star with ultra-powerful magnetic field

Astronomers have discovered a mysterious object emitting a radio wave beam that pulsed every 20 minutes.

The team behind the discovery believe the object could be a new class of slowly rotating neutron star with an ultra-powerful magnetic field. The repeating signals were detected during the first three months of 2018, but then disappeared, suggesting they were linked to a dramatic, one-off event, such as a starquake.

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Astronomers on tenterhooks as $10bn James Webb telescope set for lift off

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Nasa’s flagship mission counts down to launch at 1220 GMT on Christmas Day from Kourou, French Guiana

Final checks and fuelling are under way for the launch of the James Webb Space Telescope, a flagship mission for Nasa that aims to observe worlds beyond the solar system and the first stars and galaxies that lit up the cosmos.

If all goes to plan, the $10bn (£7.4bn) observatory will become the largest and most powerful telescope ever sent into space when it blasts off at 12.20pm UK time on Christmas Day onboard an Ariane 5 rocket from the European Space Agency’s spaceport in Kourou, French Guiana.

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