Will Deep Space Be Our Destiny?

‘Earthrise’, from 50 years ago, is one of the most influential images from the Apollo space program 

Posted by Keith Tidman

 

Humankind’s curiosity about the universe, and yearning to explore its vastness, has been insatiable … 

• Early hominids staring inquisitively at patterns in the dotted night sky
• Copernicus contemplating the heavens through his telescope, and our place in space
• The iconic landing of humans on the craggy moon surface
• Twin Viking vehicles sending back vast troves of information as they traverse interplanetary and interstellar space
• The Hubble space-based telescope capturing images of the farthest reaches of the universe, revealing the early moments of creation
• The detection of habitable planets outside our solar system, inspiring what-ifs as to life there
• The International Space Station-cum-science lab perched in geostationary space
• A hive of international satellites performing jobs essential to modern society’s thriving
• The Perseverance rover alighting on Mars to search for signs of ancient extraterrestrial life 

Our minds — the font of our imagination, inquisitiveness, dreams, and seductive desire for knowledge and understanding — have been enthusiastic spacefarers. Machines, tasked as our proxies, have had their turn to perform these missions; on other occasions, human pioneers have intrepidly taken to space. Paradoxically, these endeavours have not shrunk the universe, but have made it seem all the bigger. They have allowed us to marvel at a universe both harmonious and violent at the same time.

 

Might the kinds of human-centric and machine-centric endeavours listed above continue to define our longer-range destiny, in still grander and unforeseen ways? Should they?

 

The hazards posed by some of these missions have been presented as reasons not to engage in them. Space is a hostile place for humans. Yet, with pioneers’ minds open to the reality of inevitable unknowns, there have always been unanticipated risks associated with human exploratory enterprises over the millennia, whether navigating vast roiling oceans or trekking across unfamiliar, harsh landmasses. The current and future probing of space will be no exception to this historical course.

 

The fatal explosion of two space shuttles, one upon launch and the other upon reentry, with astronauts aboard accentuated the potential perils. Cosmonauts have faced similar fates. The poignancy of the price in human lives and health is not lost on us: The motivation of space exploration, discovery, and learning has always entailed a linking of emotion and reason, with acceptance of the possible consequences like these sobering mishaps.

 

One of the more menacing hazards during human missions beyond the Earth’s protective magnet field is radiation, with its deleterious effects on the central nervous system, as well as on cognitive and motor functions. Also, experiments with one twin on Earth and the other on a lengthy stay in space have revealed the problematic alteration of cells and genes. And astronauts’ transition from one gravity field to another has raised a need to examine re-adaptation by the body’s systems. We’re vulnerable, to be sure.

 

Yet, these and other hazards won’t hamper humanity’s spirit; these perils, too, will be overcome with time and ingenuity and determination. For the foreseeable future, there will remain an interdependent relationship between the best of machine learning, automation, and resilience and the best of human original thinking, hypothesising, interpretation, extrapolation, and dexterity in pivoting to respond to the unexpected.

 

Robots and human should be regarded as complementary allies in space exploration, not an either-or proposition. Neither will fully replace the other; nor ought they.

 

Meanwhile, taking to space for field studies has resulted in a growing cache of scientific and technological spin-offs on Earth. On a practical front, there are myriad and diverse scientific and technological derivatives that enter our everyday lives as consumers, as well as farther-reaching breakthroughs.

 

These breakthroughs include advances across broad domains: medicine, transportation, communication, food production, water purification, robotics, computing, human physiology, safety, recycling, energy, meteorology, engineering, materials science, and the environment. To those exhaustive extents, among others, investments in space exploration support homebound developments on sundry levels.

 

As for the budgetary politics of space exploration, and whether they ought to out-place competitive needs at home, one might wonder whether the monumental sums spent on bristling arsenals to fight wars evermore lethally are, in fact, a wiser commitment of capital than is exploring space. Not lost in this particular illustration is the arresting irony in more and more nations believing it an imperative to competitively militarise space.

 

All that said, when it comes to our spacefaring ambitions, there are, I propose, variables of a more intrinsic nature: like enlightening our thinking about humanity, community, and our deepest values and ideals. 

 

To these points, theoretical science and pure research have indispensable roles. History brims with examples of what humankind learned — where knowledge and understanding had inherent value in their own right — even if tangible offshoots were years, if ever, in the making and years, if ever, in the full-fledged adoption. An intrinsic value that derives from the persistent evolution of basic science, as well as the riches in new knowledge drawn from irresistibly ploughing untilled ground.

 

Theoretical science and pure research, even though where they might eventually lead is uncertain, commonly sharpen the cutting edge of human imagination, vision, and inspiration. That’s progress, of a critical sort. Being consumed by short-term thinking, with its emphasis on immediate payback, deprives us of our intellectual seed stock: the foundation for converting hypotheses into interesting and revealing models of our reality, both scientific and philosophical.

 

Space, then, is not the ‘final frontier’, but rather is only the ‘next frontier’.

Earth is more than the ‘mote of dust’ of Carl Sagan’s imagination. Humanity, I anticipate, will tirelessly play out these spacefaring beginnings, to make its destiny reality.

 

PP #48: Philosophic Reflections on a Lunar View of Earth

This view taken  July 20, 1969,  from the Apollo 11 spacecraft shows the Earth rising
above the moon's horizon. (Image credit: NASA/JSC)

Posted by Keith Tidman

Half a century after the Apollo 11 astronauts stepped onto the heavily pockmarked moon, a quarter of a million miles away, much of the world has recently been savoring again the grandeur of the achievement. Reaffirmation of the ‘giant leap for mankind’ legendarily beamed back to Earth, and the ambitious revisualisation of our space-based destiny and vistas.

The feat symbolised humankind’s intrepid instincts. To venture into space, as Earth-bound explorers once riskily did across threatening oceans and landmasses. To satisfy a gnawing curiosity, placing footprints, as these resilient astronauts did, onto unknown and little-known shores. And in the doing, be in awe of the oneness and most-fundamental architecture of humanity — the very nature of our being.

From this comparatively short distance, Earth still looks startlingly small and lonely — even humble, given its cloaking by the atmosphere. Yet, humankind might discover it isn’t alone; the cosmos brims with habitable planets. In that endeavour, how might the image of our planet change, then, as cameras peel back even farther: from elsewhere in the Milky Way and well beyond? As distances in space turn into light-years.

As Earth shrinks with distance, does the meaningfulness of our planet and its inhabitants shrink in parallel, in the vast cosmic backdrop, contesting humankind’s immodestly self-styled honorific of ‘exceptional’? Does our reality change? Or do, say, the ‘volume and mass’ of what fundamentally matters about us — our purpose — rebelliously remain unaffected, defining our place in the larger scheme, no matter Earth’s size in the surrounding cold expanse? 

A rebelliousness that, one might submit, emerges from a web of human ‘consciousness’ that stretches around the planet — the neurons and synapses (connectomes) of seven-and-a-half billion people ceaselessly firing: the stuff of dreams, imaginings, creations. Integral, perhaps, to a larger cosmic consciousness: and again, the stuff of dreams, imaginings, creations.

The seeming peacefulness in the image at top is just that: ‘seeming’. The pacific panorama masks the true nature of Earth: roiling with both natural and human activity. The phantom tranquility conceals one of our instinctual human behaviours: successive wars filling millennia of history. One wonders what idiosyncratically in the human genome leads mankind to war to remedy differences and trifling grievances, as well as quench hegemonic cravings. All the while paradoxically juxtaposed with the astounding complexities of humankind’s diverse civilisations and cultures.

As we gaze, from moon’s vantage point, upon the orb of Earth, with its thin coating of air and water, we are reminded of how vulnerably brittle the Earth’s environment is. Especially at the environment’s intersections with not-uncommonly remorseless technology. Existential risks abound. We’re reminded of the responsibility humanity has as active (proactive) guardians, to nurture the planet as the planet symbiotically nurtures us. Critical, we might agree, to the survival and continued evolution of our species.

What happens if we misguidedly, even disinterestedly, poison or exhaust the planet, as it hangs precariously in space? Or might nature, perhaps indifferent to humanity and coolly subjecting us to its whim, itself render the planet uninhabitable — leading to another major extinction event? Are we only renters, not owners? Did the lunar visit introduce a new imperative: to leave Earth behind and inhabit somewhere else?

Is there a solemnity about the rearward-looking scene of a distanced Earth — an awe that prompts reflection? A scene made all the more evocative by our believing that Earth is immersed in a sort of cosmic sea — of dark matter, dark energy, quantum fluctuations, and more. Is there the perception of ‘aloneness’, too, our seemingly distanced from everyone and everything else in that cosmic sea? The silence of the gaping, inky space contrasts with the cacophony of Earth, the latter a hive of devices that magnify our voices and echo our presence. Will that cacophony continue, or ultimately go silent?

In that presence, we marvel that humankind, dwelling on the comparatively tiny planet seen from the lunar perspective, nevertheless has the cognitive wherewithal to ponder and increasingly understand the cosmology of the whole universe: its beginning, its evolution, its current circumstances, its future. A study in the making, propelled by an irresistible impulse to know.

Anyone whose culture might have included the pre-digital-age children’s game of marbles may nostalgically recognise, from this lunar distance, the surface appearance of Earth, with its gauzy, chaotically swirling patterns. We admire its familiarly abstract beauty. All the while suspecting that there’s order interweaving the deception of chaos. Surrounding this marble-like Earth is a bewildering stillness and blackness — a blackness majestically interrupted, however, by galaxies and stunning phenomena like the Pillars of Creation.

Future generations will grasp, better than us, how this one step on another cosmic body, however craggy and nearby the moon is, served to spur far more ambitious tours through space, whether by human beings or sophisticated thinking apparatuses — to face down the harsh environment of space as we inexorably scratch our exploratory itch.