![DARK STARS](https://magarticles.magzter.com/articles/15256/533001/5f8d8525085da/DARK-STARS.jpg)
When the next generation of stars form, they sweep up the leftovers of the supernova, accreting the metals that the dying star produced – metals being the term that astronomers use for anything heavier than hydrogen and helium. Metals are important; without them, the disc of gas and dust surrounding a newly forming star could not create rocky planets. But if new stars recycle the metals produced in the deaths of old stars, what did the very first stars do?
The universe began with the Big Bang, which created the gases hydrogen and helium, trace amounts of lithium and perhaps beryllium as well. Matter began to clump together, pulling in ever more material through gravitational attraction. It may have been dark matter – the mysterious substance that has yet to be directly detected – that began to accumulate first. This then drew in the ordinary matter, the stuff we can see, such as hydrogen and helium. Together the dark and ordinary matter created what is known as a ‘minihalo’, although the name is somewhat misleading, as minihalos had masses around a million times that of our Sun.
Diese Geschichte stammt aus der Issue 109-Ausgabe von All About Space.
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Diese Geschichte stammt aus der Issue 109-Ausgabe von All About Space.
Starten Sie Ihre 7-tägige kostenlose Testversion von Magzter GOLD, um auf Tausende kuratierte Premium-Storys sowie über 8.000 Zeitschriften und Zeitungen zuzugreifen.
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![LONG AGO, A LAKE ON MARS MAY HAVE BEEN SPRAWLING WITH MICROBES](https://reseuro.magzter.com/100x125/articles/15256/1729654/KBMk_Cfs41719993738326/LONG-AGO-A-LAKE-ON-MARS-MAY-HAVE-BEEN-SPRAWLING-WITH-MICROBES.jpg)
LONG AGO, A LAKE ON MARS MAY HAVE BEEN SPRAWLING WITH MICROBES
Curiosity discovered manganese oxide in bedrock in a Martian region that may have been a shoreline billions of years ago
![MOON TOUR HELL](https://reseuro.magzter.com/100x125/articles/15256/1729654/ht0gO_mHi1719993459712/MOON-TOUR-HELL.jpg)
MOON TOUR HELL
Finding this fascinating crater isnt as hard as its name suggests...
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THIS MONTH'S PLANETS
Most of the planets are tricky targets this month, but our guide will help you locate them
![UNIVERSE BEFORE TIME](https://reseuro.magzter.com/100x125/articles/15256/1729654/cHFLjjJOS1719991851680/UNIVERSE-BEFORE-TIME.jpg)
UNIVERSE BEFORE TIME
Could the existence of a mirror-image cosmos before the Big Bang solve some of the biggest mysteries in astronomy?
![CLIMATE CHANGE IN THE SOLAR SYSTEM](https://reseuro.magzter.com/100x125/articles/15256/1729654/Se3Bbyf0G1719991384386/CLIMATE-CHANGE-IN-THE-SOLAR-SYSTEM.jpg)
CLIMATE CHANGE IN THE SOLAR SYSTEM
Alongside Earth, our planetary neighbourhood is changing, but it’s not for the better…
![Stars give tiny planets a gravitational 'squeeze' to strip away their atmospheres](https://reseuro.magzter.com/100x125/articles/15256/1729654/QMnZ5oBmH1719991224194/STARS-GIVE-TINY-PLANETS-A-GRAVITATIONAL-SQUEEZE-TO-STRIP-AWAY-THEIR-ATMOSPHERES.jpg)
Stars give tiny planets a gravitational 'squeeze' to strip away their atmospheres
A scientist has learned more about the violent processes that rip atmospheres away from planets, finding that squashing and squeezing by a parent star can contribute to this process.
![The Milky Way's halo is filled with ‘magnetic doughnuts' as wide as 100,000 light years](https://reseuro.magzter.com/100x125/articles/15256/1729654/zhhazHOyf1719991166108/THE-MILKY-WAYS-HALO-IS-FILLED-WITH-MAGNETIC-DOUGHNUTS-AS-WIDE-AS-100000-LIGHT-YEARS.jpg)
The Milky Way's halo is filled with ‘magnetic doughnuts' as wide as 100,000 light years
The outer halo of the Milky Way is filled with magnetic fields that take the shape of vast doughnuts with diameters ranging from 12,000 to 100,000 light years, with the heart of our galaxy at their centre.
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The Pentagon wants the commercial space reserve to support military satellites in orbit
The US Department of Defense is developing a plan to use the ever-growing American commercial space industry for national security purposes.
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DOES A COSMIC 'GLITCH' IN GRAVITY CHALLENGE ALBERT EINSTEIN'S GREATEST THEORY?
Gravity changes once you reach a cosmic scale
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DEEP SKY CHALLENGE : STELLAR TREASURES OF THE ARCHER AND SCORPION
Summer skies are stuffed full of amazing objects for your telescope - if you're prepared to stay up late