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WHERE DID THE ANTIMATTER GO?
It was destroyed after the Big Bang
Antimatter and matter are supposed to be created in comparable abundance. However, almost all matter observed from Earth seems to be made of matter rather than antimatter. Where did the antimatter go? Antimatter was either destroyed within a second after its creation in the Big Bang, or the Big Bang made antimatter in a distant universe that is far beyond our reach and our visible world happens to be in a matter zone.
The first possibility could be caused by a possible tiny asymmetry between matter and antimatter, and it is being studied by accelerator experiments. The second possibility is being explored by balloon and space-based experiments - a recent famous one is the AMS-02 experiment mounted on the International Space Station. In those experiments, scientists are looking for tiny fragments of primordial antimatter in cosmic rays. Dr Aihong Tang, Brookhaven National Laboratory, New York
WHY DO CRAFT SPEED UP NEAR EARTH?
It may be due to Earth's spin
Possible effects include the atmospheric drag of low-orbit trajectories, ocean and solid tides, charging and magnetic momentum of craft by solar wind, overlooked general relativity phenomena or thermal radiation. Or perhaps it's a strange dark matter halo around Earth. Also perplexing is the phenomena's disappearance in flybys since 2005. Dr Luis Rodríguez Universidad de Extremadura, Spain
CAN LIGHT ESCAPE BLACK HOLES?
Theory says that it can
This story is from the Issue 128 edition of All About Space.
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This story is from the Issue 128 edition of All About Space.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
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LONG AGO, A LAKE ON MARS MAY HAVE BEEN SPRAWLING WITH MICROBES
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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
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UNIVERSE BEFORE TIME
Could the existence of a mirror-image cosmos before the Big Bang solve some of the biggest mysteries in astronomy?
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CLIMATE CHANGE IN THE SOLAR SYSTEM
Alongside Earth, our planetary neighbourhood is changing, but it’s not for the better…
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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.
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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