Archive for Astronomy

Theology of Creation

A sermon I gave at Kippax Uniting Church on 1 September 2024, using the texts Song of Solomon 2:8-13, Romans 8:18-25, and Revelation 11:18; 15:2-3; 22:1-2

Saint Paul tells us at Romans 8:22 that the whole creation is groaning together in the pains of childbirth.  He says the creation waits in eager expectation for the revelation of the children of God. This is a remarkable Christian vision of the integration of care for humanity and care for nature, what Pope Francis has called an integral ecology.  Paul saw the expectation of faith and hope and love for humanity in the message of Christ as somehow mirrored in the expectation of the cosmos itself.  The idea that the whole creation is suffering provides a starting point to discuss how God is both present and absent in the world and in the cosmos. 

In comparing the created order to a woman in labor, Paul implies that the world has an inherent divine purpose, that our planet is pregnant with divine intent.  He looks to a goal of planetary transformation that will bring a complete change of our perception. Once a child is born, its relationship to the world around it transforms completely compared to when it was in the womb. Paul teaches that the world will be transformed through broader understanding of how God relates to nature and to humanity, as a new world is born from the womb of the old.

A baby is not seen until it is born.  Similarly, the reign of God is largely invisible, seemingly absent, but ready and waiting to be born when the world is ready.

A main difference between the kingdom of God and the kingdom of the world is that God’s reign is orderly, while worldly politics and culture are chaotic and fallen from grace.  Paul saw the reign of God reflected in the perfect eternal order and stability of the visible heavens, the whole created order of the cosmos.  God calls us to shift from chaos to order, from fall to redemption, grounded in moral principles of love, truth and justice. 

These principles of divine order are eternal, extending beyond human society to encompass the whole natural creation.   We speak of a fall from grace as occurring when a person loses their previously stable position, status and purpose and is disgraced.  The analogy with a state of divine grace as imagined in Paul’s creation theology can see the whole planet as having a stable position, status and purpose, as distinct from our confused and corrupted human condition.  In modern climate science, this sense of a state of planetary grace can be understood through study of fields such as Earth System Stability, Complex Adaptive Systems and punctuated equilibrium.

Is it possible for the whole world to return to a state of grace?  That is the astounding promise of salvation in Christ presented by Saint Paul in his Letter to the Romans. 

The orderly nature of the cosmos is seen in the stable patterns of the stars and the solar system. We can also see stable order in the durable productive cycles of ecological systems, except that climate change is disrupting and corrupting the existing order. Jesus calls in the Lord’s Prayer for the will of God to be done on Earth as in Heaven.  He implores us to see the unchanging and eternal as the model for what our constantly changing temporal world could become.

Paul envisages a change akin to childbirth. He describes the creation itself being set free from its bondage to decay and brought into the glorious freedom of the children of God. His call for patient hope for what we do not yet see invites us to imagine the presence of God among us.

The Song of Solomon celebrates the presence of God in nature as the season changes from winter to spring, as we celebrate the first day of spring today with Wattle Day, Father’s Day and Creation Sunday.  Solomon compares God to the Sun, “leaping upon the mountains, bounding over the hills”, looking in our window of winter to call us to a new year as the spring flowers appear on the earth and the time of singing has come.

Celebration of the natural cycle of the year was central to the agrarian communities of Biblical times, seeing God in the cycle of the seasons between times of action in the warmer months and reflection in cooler months.  Religion set the timing of festivals to accord with the seasons, using astronomy to watch the movement of the Sun and Moon against the stars.

Birth is difficult.  The Book of Revelation imagines a time when the wrath of God will destroy those who destroy the Earth, at Chapter Eleven Verse Eighteen.  This is a remarkable ecological vision that imagines God transforming our planet through Christ, like Paul’s vision of the birth of a new creation. John of Patmos, the author of Revelation, invites us here to think about who today is destroying the Earth and how they stand with God.  To return to a state of grace is not compatible with destroying the Earth.  Instead the Earth must be held sacred.  And yet that destruction may be our planetary trajectory, if global warming is not reversed. The Revelation imagines a cosmic war between good and evil, fought over whether our Earth has a future of grace or of corruption. This can be partly understood by seeing the divine blessing upon natural Earth systems and divine wrath upon those who destroy them.

Revelation 15:2 describes those who had conquered the beast and its image and the number of its name, standing beside a sea of glass mixed with fire. In line with the previous statement about divine wrath, this difficult image of victory over the beast of the apocalypse, seen as the embodiment of evil, can be understood to refer to God’s victory over everything that destroys the Earth.

In a beautiful image of the Kingdom of God, Saint John next tells us “They were holding harps from God, and they sang the song of God’s servant Moses and of the Lamb:  “Great and wonderful are Your works, O Lord God Almighty! Just and true are Your ways, O King of Ages!

This title King of Ages is often mistranslated King of Nations or King of Saints. The focus of King of Ages is on God’s eternal timeless nature rather than authority over nations.  This sense of eternal divine sovereignty accords with an ecological vision of the world, seeing a deep time context of what the ancients meant by Ages.  My view is that the ancient concept of Ages derived from astronomy, watching and measuring the slow movement of the stars against the seasons.


The cosmology in our texts today is about creation history, from the original good creation, then the fall of man, looking toward redemption in Christ as a return to a state of divine grace.  In iridescent poetry, John expands on this vision of grace. He tells us the angel showed him a river of the water of life, as clear as crystal, flowing from the throne of God and of the Lamb down the middle of the main street of the city. He says on either side of the river stood a tree of life, bearing twelve kinds of fruit and yielding a fresh crop for each month. He comments that the leaves of the tree are for the healing of the nations.

This vision of the tree of life has much to tell us about the theology of creation.  The tree of life first appears in the Bible at Genesis 2:9, where it represents life and God’s eternal providence. It is distinct from the Tree of the Knowledge of Good and Evil, from which Adam and Eve are forbidden to eat. The return of the Tree of Life in Revelation 22 at the end of the Bible marks the promise of a return of humanity to a state of grace, coming home from the exile of the fall.

An intriguing thing about this image is its fit to observation of the heavens.  Here is an artwork I made to explore the analogy between the pure crystal river of life and the Milky Way, and between the Tree of Life, with one fruit for each month, and the position of the Sun against the stars over twelve months.  A clue to this reading is the statement that the tree grows on both sides of the river.  No earthly tree grows on both sides of a river, whereas the twelve zodiac constellations traversed by the Sun are on both sides of the great celestial river of the Milky Way Galaxy.

Using astronomy software, I made a map of the stars along the Milky Way as viewed looking south from Australia in autumn.  Scorpio is on the lower left while Sirius is at top right.  From Sirius, the Milky Way goes through Argo the ship, then the Southern Cross, the Centaur including the Pointers, the Dark Emu, Norma the Carpenter’s Square, and flowing out into Scorpio. 

The tumbling river of life starts at Sirius and goes through the tree of life before falling over two waterfalls and reaching Scorpio after pooling at the Dark Emu and Norma.  I have drawn the tree of life based on the Southern Cross as the trunk, adding roots and branches.  The twelve signs of the zodiac above the tree are shown to symbolise the tree of life growing on both sides of the river of life. The Large Magellanic Cloud is shown as a turtle, Argo as a flying goose, and a circle marks the South Celestial Pole, the point around which the whole heavens revolve. 

This next picture is again an astronomical sky map I made, showing how the Milky Way bisects the circle of the zodiac.  The constellations from Taurus to Sagittarius are to the south of the Milky Way, while those from Gemini to Scorpio are to the north. This star map includes the southern heavens, with the brightest stars Sirius and Canopus pointing toward the Large Magellanic Cloud and the South Celestial Pole.

The ancients were far more aware of visual astronomy than we are today.  Watching the stars provided the celestial context for the message of the Gospels, seeing God present in the order of the visible heavens, great and glorious and gracious, unchanging and eternal.

Seeing this eternal order of the stars as a framework to understand time can be compared to the theory of time in the Bible with its majestic story of creation, fall and redemption.

The study of deep time enables us to understand how fragile and sensitive our living planet really is.  Climate change is our biggest danger.  Humans have added a trillion tonnes of carbon to the air, which is now like a ticking time bomb waiting to explode.  At least four times in geological history, rising carbon has caused mass extinctions.  Defusing this risk requires rigorous scientific assessment.  While carbon is the big climate problem, the best way to treat it in the short term, in my view, is to rebrighten the planet, using global cooling technologies to reflect more sunlight back to space and increase what is known as planetary albedo, also called reflectivity or brightness. Earth’s albedo has darkened by nearly 2% in this century, a major contributor to heating.  Higher albedo would reverse this trend.

Global cooling requires immense care and cooperation. This step would change the relationship between humanity and our planet, opening a need for global climate stewardship. Wise governance is essential to ensure decisions are safe and acceptable and effective. International governance of research and planning can enable coordinated use of sunlight reflection, on the model of world cooperation in many sectors of the economy and culture and science. 

However, there is much opposition to this proposal. Governments recently prevented the United Nations Environment Programme from studying it.  Sceptics should weigh the risk of research into rebrightening the planet against the much worse risks of unchecked climate change, even with emission reduction. An emerging scientific consensus agrees that the likely benefits of rebrightening justify research, aiming to mitigate the adverse impacts of excess heat, such as sea level rise, loss of biodiversity, extreme weather and systemic disruptions.  The UK Royal Society estimated the cost to cool the Earth by increasing planetary albedo as 1000 times less than the estimated cost of equivalent cooling from cutting emissions.

Conflicts around the world are worsened by impacts of global warming and extreme weather on food security and forced migration.   Climate is a security problem.  Discussions on rebrightening the planet would encourage global cooperation for peace, aiming to reduce the climate drivers of conflict. Unfortunately, this line of thought is largely excluded from discussion at the IPCC, the Intergovernmental Panel on Climate Change. I hope that will change.

As we return again to Paul’s vision of the whole creation groaning, we pray for our groaning world with eight billion people and collapsing ecosystems, with no clear path toward a sustainable future.  The clear hope of Paul for a redeemed creation, where he says in Romans 8 that the creation itself will be set free, is reflected in the beautiful image in revelation 22 of the leaves of the tree of life for the healing of the nations.  Healing is better with a good diagnosis.  Trying to understand the thinking in the Bible about the theology of creation can help us to heal our world.

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Out of the Depths

Out of the Depths

Robbie Tulip

Kippax Uniting Church

Sunday 6 June 2021

Our readings today are from the Old Testament, from Genesis, Samuel and the Psalms. The theme that brings them together is the fall from grace. 

The fall is a simplified mythological story told to explain why there is evil in the world. We hear in our readings of the expulsion of humanity from paradise, of the fraught decision of ancient Israel to put trust in a king rather than in God, and of the Psalmist

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Cleansing the Temple

Cleansing The Temple

7 March 2021

Kippax Uniting Church

Robbie Tulip

Psalm 19:1-8, John 2: 13-17

Our readings for today are from Psalm 19 and the Gospel of Saint John.  The Psalm explains how the glory of God is revealed in the magnificent order of the visible heavens. The Gospel reading tells of Jesus driving the moneychangers and their animals out of the temple in Jerusalem.  I will use this opportunity to explain how these texts relate to my own theology, which differs quite markedly from conventional approaches.

Before getting into my own interpretation, it is important to reflect on the great power of the Gospel story of the cleansing of the Temple.  The courage and vision of Christ are presented by John at the beginning of Jesus

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Planet Positions 2021

This excel spreadsheet shows positions of the Sun, Moon, Planets, Eclipses and Lunar Node by Right Ascension for calendar 2021.

Notable visual events include

Mars and Venus are conjunct in the western sky on 12 June.

Jupiter, Saturn and Venus form a wide triple at the end of the year.

Best dates to view Mercury in the evening are late January, mid May and August-September.

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The Precessional Structure of Time

In this essay, I seek to explain the connection between astronomy and mythology as the basis for a new paradigm.

Table of Contents
Overview 1
The Physics of Precession 2
Precession and Climate 3
Earth and the Solar System 6
Zodiac Ages 6
Precession, Gas Giant Planets and The Solar System Centre of Mass 7
Fourier Transform Decomposition of Solar System Barycentre Wave Function 11
The House of the Age 12
Thematic Principle of the New Age of Aquarius 13
Dynamic Structure of The Age of Pisces 14
Precession and Evolution 15
Precession in Myth and Culture 15
Precession and Man-Made Climate Change 17
Precession and Christianity 18
Indian Sources of Western Precession Myth 20
Platonic Origins of The Christ Precession Story 22
Precession Encoded in Art: Leonardo

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