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Optical illusion gives green comet an ‘anti -tail’ that defies physics

Reported by Harry Baker
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All About Space
Issue 140
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All About Space
WELCOME
SCAN HERE TO GET OUR DAILY NEWSLETTER The
16 100 WONDERS of the UNIVERSE
THE DISCOVERIES AND INCREDIBLE PHENOMENA THAT HAVE REVOLUTIONISED OUR UNDERSTANDING OF THE COSMOS
LAUNCHPAD
Hubble captures a glittering neighbour
Amazing Leslie images Kean © ESA/Hubble; NASA A
A galactic get together
© ESA/Webb; NASA The James Webb Space Telescope
A model galaxy
© NASA; ESA While the James Webb Space
Webb discovers water ice at ringed asteroid Chariklo by remarkable luck
This illustration shows what the centaur Chariklo and
UAE lunar r over will test the first artificial intelligence on the Moon with Canada
The Moon is about to host one giant
Europe’s mission to Jupiter’s moons prepares for April launch
Europe’s mission to explore three icy moons of
100 WONDERS OF THE UNIVERSE
OUR COSMOS IS FULL OF AMAZING SIGHTS, FROM EXOTIC EXOPLANETS TO STUNNING GALAXIES
FUTURE TECH
DEEP-ORBIT OBSERVATORY
We can use the Sun as a giant lens, but we’d need to send a telescope far into the Solar System
INTERVIEW
BIO
Alex Teachey
“I expect it to be a habitable exomoon”
Sifting through data from NASA’s Kepler, astronomers believe that we could have picked up the first signal of an alien moon. Co-discoverer and astronomer Alex Teachey reveals if we should be getting our hopes up
FOCUS ON
WORK BEGINS ON NASA’S ASTEROID-HUNTING TELESCOPE
The infrared space telescope will search for potentially threatening near-Earth objects
THE 60-YEAR EVOLUTION OF SPACE SURVIVAL TECH
These miniature spacecraft have allowed us to operate in space for over half a century
THE FIRST GALAXIES MAY HAVE FORMED MUCH EARLIER THAN WE THOUGHT
The finding has been revealed by the James Webb Space Telescope
WEBB SCORES ITS FIRST ROCKY PLANET CONFIRMATION
Hopefully the first of many more detections to come
IN YOUR HOME
Bound by its motto – ‘for the benefit of all’ – since its formation NASA has had an obligation to foster and transfer its technological and scientific breakthroughs to the public and commercial spheres
EXCEPTIONALLY RARE BINARY SYSTEM WITH A THOUSAND-YEAR ORBIT
The star Gaia17bpp began brightening again after a sevenyear eclipse, indicating it exists in an unusual set-up
Why is it so important to understand gravity on a small scale?
That’s difficult to answer, because important means different
What sort of objects generate gravitational waves?
They’re produced by pretty much anything – you,
What will the Vera C. Rubin Observatory do?
The Vera C. Rubin Observatory is the site
Could a true fundamental theory of the universe exist that’s too difficult for us to grasp?
Sometimes I think there must be an ultimate
What will Mars be like in the next billion years?
One of the curious things about Mars is
What are the major technical challenges involved in manned missions to the moon?
Sending humans to the Moon is a massive
Was it the right decision to retire the Space Shuttle?
Mars does have two small moons, but they
RUN A MESSIER MARATHON
This March there are galaxies, nebulae and star clusters galore – see how many you can spot in All About Space’s spring deep-sky challenge
INSTANT EXPERT
HOW HIGH COULD WE JUMP ON OTHER WORLDS?
What is low gravity like, and how high could we leap on alien surfaces?
HOW DID SOME STARS BECOME LOST SOULS?
Scientists have been studying a ghostly light in between galaxies to discover the origin of these unusual stellar objects
STARGAZER
WHAT’S IN THE SKY?
What to look out for during this observing period
STARGAZER
MOON CALENDAR
* The Moon does not pass the meridian
STARGAZER
THIS MONTH’S PLANETS
Venus takes pride of place in the evening sky
LINNÉ
Track down one of the most infamously mysterious craters on the lunar surface
NAKED EYE AND BINOCULAR TARGETS
Take a tour of Leo, Cancer and Gemini this evening, without the need of a telescope
THE LION’S GALAXIES
The evenings of early spring are full of deep-sky objects
NORTHERN HEMISPHERE
The spring constellations are teeming with galaxies for deep-sky enthusiasts
ASTROSHOTS OF THE MONTH
The Moon in ‘mineral colours’ FERNANDO MENEZES Location:
LEGO INTERNATIONAL SPACE STATION
Join the astronauts in orbit with this excellent model
IN THE SHOPS: DEEP-SKY TELESCOPES
1 Celestron NexStar 8SE Cost: £1,499 (approx. $1,799.90)
ALEXEI LEONOV
The first man to walk in space
All About Space
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