The Universe · published by Sukh Sandhu Pty Ltd

Wonder Weekly

Science and wonder, weekly.

Space, astronomy and physics for readers who want to know how we know.

Stars wheeling slowly across a clear night sky
How we know

What a confidence level actually tells you about a new result

Every announcement of a discovery is really a statement about how unlikely the result would be if nothing were there. Understanding that one idea is the difference between reading science news and being sold it.

Explainer · Scale

From your own height to the edge of what we can see

Drag the dial. Every step multiplies the view by ten, twenty seven times over. The sizes and distances are the rounded figures astronomers use, and everything is drawn to scale at every setting, apart from the small marker that shows where you are.

Field of view

10 m

10 metres

In view

A person

About 1.7 m tall. Each step of the dial makes the view ten times wider.

Background footage is stock video, used for illustration. Figures are rounded.

From the science desk

More stories

Explainers that stay true after the news cycle moves on: what was measured, how it was measured, and how sure anyone can be.

The band of the Milky Way rising over a dark, flat horizon
Exoplanets

Why most new planets are found by watching a star flicker

A planet crossing its star dims the light by a fraction of a percent, on a schedule. What that method can measure, what it cannot, and why it favours big planets close in.

An observatory dome open to a starry sky
Method

The difference between a detection, a candidate and a claim

The same observation can be described three ways depending on how much checking has happened. A short guide to the vocabulary, so a headline cannot oversell a result to you.

A large radio telescope dish pointed at the sky at dusk
Instruments

What a radio telescope actually records, and why it is not a picture

Radio images are reconstructed from interference patterns, not photographed. Understanding that changes how you read the colourful images that accompany the announcements.

A small telescope on a tripod set up in a garden under the night sky
Southern sky

How to read the southern night sky from a suburban backyard

Light pollution takes the faint objects but leaves plenty. What is genuinely visible without a telescope from an Australian city, and how the view shifts through the year.

Laser beams crossing an optics bench in a darkened laboratory
Cosmology

Why dark matter is a measurement problem before it is a particle

The evidence is a mismatch between how much mass we can see and how fast things move. What would count as solving it, and what the honest alternatives still are.

The bright exhaust trail of a rocket climbing into the night
Space flight

How a spacecraft changes course without burning much fuel

Gravity assists, aerobraking and long slow ion thrust all trade time for propellant. The physics of getting somewhere when you cannot carry enough fuel to simply fly there.

Explainer · Gravity

What a bathroom scale would read on other worlds

Your mass is the same everywhere. What changes is how hard each world pulls on it, so a scale set up on Earth would read differently. Surface gravity figures are the rounded values in published planetary fact sheets.

Close view of the cratered surface of the Moon

Try your own number. Nothing you type leaves this page.

Selected world

Mars

A scale would read 26.4 kg.

A ball dropped from one metre lands in 0.74 s, against 0.45 s on Earth.

A 30 cm standing jump would rise about 79 cm, before allowing for a spacesuit.

The band of the Milky Way rising over a dark, flat horizon
Southern sky

Where much of the interesting work is pointed

The perspective is. The southern sky, the observing conditions here and what is visible from Australian latitudes shape the coverage, while the science itself is international.

Circular star trails from a long exposure photograph of the night sky
The weekly email

The Long Exposure

One email a week: a sky guide for the nights ahead, one result explained properly, and an honest note on how solid the evidence actually is.

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The masthead

How this masthead works

An observatory dome turning under a moving field of stars
Stock footage, for illustration.
Instrument 01

What we cover

The Universe covers space flight, astronomy, cosmology and physics for readers who did not study any of it. The commitment is to explain the reasoning, not just the result: what was measured, how, how confident the researchers are, and what would change their minds. Australian readers get the southern sky, which is where much of the interesting work is pointed, along with a sky guide written for these latitudes: a month by month view on the site, and a shorter note on the nights immediately ahead in the weekly email.

Instrument 02

How we work

We read the paper, not only the press release, and we link to it. Preprints are labelled as not yet peer reviewed, and we say so in the story rather than the footnotes. Uncertainty is reported as part of the finding, not buried. Artists' impressions and simulations are captioned as such and never presented as photographs. Curious is the tone, credulous is not: extraordinary claims get the same questions whoever is making them. The Universe is published by SUKH SANDHU PTY LTD (ACN 679 292 392, ABN 49 679 292 392), an Australian company. We are a publisher and not a research body: we run no telescopes, hold no grants, accredit and assess nobody, and have no commercial relationship with any research institution, university or space agency.

Instrument 03

Corrections

Corrections are published on the story with a dated note describing exactly what was wrong. Where a result is later revised, retracted or fails to replicate, we go back and update the original piece rather than leaving it standing. Readers can report an error through the contact page, including scientists who think we have misread their work.

Reader questions

Questions

Do I need a physics background to read this?

No. Everything is written for a curious general reader, with the maths kept out of the body text and the jargon defined the first time it appears. Nothing is dumbed down, but nothing assumes a degree either.

How do you handle preprints and unreviewed results?

We cover them when they matter, clearly labelled as not yet peer reviewed, and we say what would have to happen for the result to firm up. We do not treat a preprint as settled science.

Will you cover UFOs, aliens and fringe theories?

We cover the evidence, including the absence of it. A claim gets taken seriously enough to be examined properly, which usually means setting out what a genuine detection would look like and where the claim in front of us falls short of it.

Is the coverage Australian?

The perspective is. The southern sky, the observing conditions here and what is visible from Australian latitudes shape the coverage, while the science itself is international.