With all the challenges on planet Earth, it may seem like a frivolous waste of money and carbon emissions to send rich "tourists" into space for a few moments of weightlessness.
But many similarly dismissed the Wright brothers' efforts at Kitty Hawk in December 1903 as an underwhelming flight of fancy.
In fact, it was a small but crucial first step in the story of flight, which ultimately opened up global travel and connectivity to the masses which has transformed humanity forever.
In a similar spirit, Virgin Galactic and Blue Origin are symbols of the frontier of the second major era of space exploration, one where private industry is in the pilot's seat.
The first era of space exploration saw the US and Russia invest vast public resources in their space programmes, even in the face of domestic issues crying out for attention.
But when President Kennedy vowed to land Americans on the Moon by the end of the 1960s, he knew it would unlock human potential in ways that no one could fully imagine. He was right.
Eyes in the sky
It is due almost entirely to the series of satellites launched by Nasa in 1992 that we are even able to accurately measure sea level rise at all.
The wake up call the United Nations' Intergovernmental Panel on Climate Change was informed by data from dozens of remote sensing satellites and instruments
These 'eyes in the sky' are fundamental to our understanding of global warming. monitoring the vital signs of our planet: temperature changes, greenhouse gas emissions, soil moisture and glacier movements.
The Carbon Mapper and MethaneSAT projects are set to deliver new satellites into space that will monitor potent methane emissions leaking from gas wells, pipelines, refineries, and power plants, allowing scientists to accurately pinpoint sites to target with localised emissions mitigation efforts.
The competition emerging in the space industry is crucial to delivering the critical mass that will make operating in space more affordable and spur a new wave of innovation.
Elon Musk's satellite broadband company Starlink was born from the pioneering work of SpaceX, with its reusable rockets taking people to and beyond the International Space Station, most recently with the Inspiration4 spaceflight of non-professional astronauts.
Sir Richard Branson's space tourism venture has already spun off Virgin Orbit, which aims to make delivery of small satellites into space cheaper and more sustainable.
This pioneering challenge is partly what drew me to Branson's quest to launch a space tourism industry and pursue the breakthroughs that could accompany it.
When I, along with what was then around 300 other would-be astronauts put our money down in 2012 for a Virgin Galactic ticket, we played a role to help underwrite and validate demand for a bold venture that might otherwise never have got off the ground.
This new era of space exploration that I am committed to being a part of is risky and expensive but will, I believe, offer a net benefit to humanity. It doesn't mean that we should turn our gaze skyward in favour of addressing the problems facing us on our warming planet. We should aspire to do both
Funding climate tech
It's encouraging to see record amounts of funding pouring into climate tech, with the Silicon Valley Bank reporting US$58 billion ($83.7b) will be invested in 2021, beating out last year's record US$35b.
At Aera VC, we have funded companies like Noya, which uses cooling towers common to industry all over the world to pull in air and extract the carbon dioxide from it. At scale, this technology could make a significant impact on reducing the amount of CO2 in the atmosphere.
Dawn Aerospace, another of our investments, is creating reusable drone-like spacecraft that will usher in a new era of inexpensive and sustainable orbital access. Their aim is to be the first spacecraft in history to reach space and return to Earth twice in one day. They recently completed a series of successful test flights from New Zealand, where I live and work.
Some very aspirational thinkers are pursuing more ambitious reasons for furthering into space, such as mining asteroids for minerals or relocating our polluting industries there. If we can do it while consciously addressing any resultant space debris without causing chaos in the rest of the Solar System, why not?
Since the beginning of time it has been inherent in human nature to make room for the risky challenges and longshots that enable us to understand ourselves, our planet and the universe we inhabit.
We must keep pursuing them.
Those efforts have resulted in the finest moments of human endeavour and will ultimately play a role in ways we can't even yet comprehend, in addressing the biggest challenge ahead - avoiding catastrophic climate change.
- Derek Handley is a future Virgin Galactic passenger and co-founder of Aera VC, an early-growth fund investing in climate and deep tech ventures that accelerate the world towards a sustainable future.
- Aera is co-hosting an event with Outset Ventures, 'Building a Climate Tech Venture to Save the World' on October 28 as part of the Auckland Climate Festival.