Shopping Cart -

Your cart is currently empty.
Upgrade to today
for only an extra Cxx.xx

You get:

plus This issue of xxxxxxxxxxx.
plus Instant access to the latest issue of 410+ of our top selling titles.
plus Unlimited access to 33000+ back issues
plus No contract or commitment. If you decide that PocketmagsPlus is not for you, you can cancel your monthly subscription online at any time. Auto-renews at £9.99 per month, unless cancelled.
Upgrade for 99p
Then just £9.99 / month. Cancel anytime.
Learn more
Pocketmags Digital Magazines
GB
Pocketmags Digital Magazines
   You are currently viewing the United Kingdom version of the site.
Would you like to switch to your local site?
Read anywhere Read anywhere
Ways to pay Pocketmags Payment Types
Trusted site
At Pocketmags you get
Secure Billing
Great Offers
Web & App Reader
Gifting Options
Loyalty Points
136 MIN READ TIME

The Case for a Galactic Defense System

BY GEORGE MICHAEL

LAST JUNE, THE LONG AWAITED SEQUEL INDEPENDENCE Day: Resurgence opened in theaters around the world. Although not as commercially successful as its blockbuster predecessor, the film at least elaborated in greater detail on alien motivations for conquering Earth. As explained in the story, the alien mothership sought to harvest the heat of the Earth’s core, which in the process would destroy the planet’s magnetic field, thus obliterating all of its inhabitants. Such a scenario is highly improbable because there would be more feasible methods for alien civilizations to extract comparatively greater amounts of energy, including harnessing the heat of stars, which are estimated to number 400 billion in the Milky Way Galaxy alone.1 Moreover, it does not seem plausible that an advanced alien civilization capable of traversing interstellar distances would be interested in extracting the relatively crude energy sources or harvesting resources to be found on Earth when such commodities could be obtained in much greater quantities closer to the home planet. From the perspective of an advanced alien civilization, plundering the Earth for its resources would be neither practical nor desirable. Be that as it may, there would be good reasons for interstellar colonization, primarily for defensive, rather than offensive purposes. To ensure its longterm survival, a civilization would need to keep apprised of what is happening outside of its star system, for there are a number of perils that lurk in the Galaxy. Thus, the construction of a Galactic Defense System is advisable.

Illustration by Ástor Alexander

Perils in the Galaxy

READ MORE
Purchase options below
Find the complete article and many more in this issue of Skeptic - 21.4
If you own the issue, Login to read the full article now.
Single Digital Issue
21.4
£4.49
This issue and other back issues are not included in a new Skeptic subscription. Subscriptions include the latest regular issue and new issues released during your subscription.
Annual Digital Subscription
Only £ 3.25 per issue
SAVE
28%
£12.99

View Issues

About Skeptic

DECEPTION IN CANCER TREATMENT SPECIAL ISSUE: The Cancer-care Industry’s Marketing is Among the Most Deceptive on the Consumer Landscape. SPECIAL SECTION: Classic Skepticism: The Amityville Hoax at 40; Alien Sulls: Do the Mysterious Rhodope Skull and Adygea Skulls Belong to Aliens?; The Real Meaning Behind the Nazca Geoglyphs; Clown Panics: Sightings of Mysterious Clowns Rattle Nerves ARTICLES: The Case for a Galactic Defense System; Is “Spirituality” so Broadly Defined that Testing for it is Meaningless?; Are We Living in a Computer Simulation?; Luck and Regression to the Mean: One of the Most Fundamental Sources of Error in Human Judgment; Political Obfuscation: Thinking Critically about Public Discourse. COLUMNS: The SkepDoc: Anti-Aging Claims: The Fountain of Youth is Still Only a Legend, by Harriet Hall, M.D.; The Gadfly: Can Working Memory Be Trained to Work Better? by Carol Tavris REVIEWS: “Three books about the Salem Witch Trials and their legacy: The Witches: Salem, by Stacy Schiff; In the Devil’s Snare: The Salem Witchcraft Crisis of 1692, by Mary Beth Norton; America Bewitched: America Bewitched: The Story of Witchcraft After Salem, by Owen Davies JUNIOR SKEPTIC: Mammoth Mysteries! Part Two, by Daniel Loxton

Other Articles in this Issue


Editor’s Letter
The Skeptics Society is a nonprofit 501 (c)(3) educational organization
COLUMNS
Anti-Aging Claims: The Fountain of Youth Is Still Only a Legend
Can Working Memory Be Trained to Work Better?
Michelle E. Ainsworth holds an MA in history. She enjoys
SPECIAL SECTION CLASSIC SKEPTICISM
Why the Myth Endures
TO SOMEONE WITH BIOLOGICAL TRAINING, ONE OF THE MOST irritating
A Pictographic Creation Story
Sightings of Mysterious Clowns Rattle Nerves in South Carolina
ARTICLES
LAST JUNE, THE LONG AWAITED SEQUEL INDEPENDENCE Day: Resurgence opened
Is “Spirituality” so Broadly Defined that Testing for It Is Meaningless?
THE NOTION THAT WE’RE ALL JUST COMPUTER simulations living in
The Cancer-care Industry’s Marketing Is Among the Most Deceptive on the Consumer Landscape
One of the Most Fundamental Sources of Error in Human Judgment
Thinking Critically about Public Discourse
REVIEWS
A review of three books about the Salem Witch Trials
A Review of The Faith of Christopher Hitchens by Larry Taunton
JUNIOR SKEPTIC
Welcome back to the curious tale of mammoths and mastodons!
We ended Part One with a wonderful scene from 200
With new fossil discoveries and Cuvier’s research, it was becoming
Rembrandt Peale was mistaken about his carnivorous mastodon with the
At the same time that new fossil discoveries were revealing
The first few decades of the 1800s brought a wealth
It’s a lot of trouble to make money selling tickets
People who read newspapers during the 1800s found tall tales
We’ve come a long way since the days when mammoth