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Robert WalkerRSS Feed of this column.

I'm Robert Walker, inventor & programmer. I have had a long term special interest in astronomy, and space science since the 1970s, and most of these blog posts currently are about Mars and space... Read More »


Many journalists have penned exaggerated, click baity but inaccurate articles about the IPCC report on climate change. One of the worst is the one published in the NY Times. It doesn’t have that many out and out mistakes, but it is a highly respected source, and so its mistakes, particularly the confusion of carbon costs and carbon pricing, and not being clear about what happens in 2040, in 2075 or 2100, confused many people.

This is running as a scary story in the more sensationalist science outlets. Dark matter barely interacts with matter and if they are right we are right in the middle of it already. It can’t do any harm. It’s been doing this for all of human history and more.

It's not even like a wind. Not even like the pressure of light. It's like nothing at all.

Nothing to worry about for us. It's pointing in the wrong direction to ever harm us with the gamma ray burst jet. Their best fit model is that it is angled at 30 degrees to the line of sight.

It is too far away from us anyway at 8,000 light years. And there are no gamma ray burst candidates close enough to harm us. I go into that in detail in my article:

But this would be seriously bad news for any living beings that are on stars right close by within a few light years especially, along the line of the jet. Up to 50 light years away, it would cause significant effects on a planet like ours.

This is a very bizarre click bait title from the NY Post that is scaring people. There is nothing here to worry anyone. It is not true at all,even the article itself says nothing about the planet exploding. Just some journalists inventive idea about a way to get people to click on the title?? Fake news. But the research is interesting, an interesting puzzle

Fake click bait title from the NY Post:

Short summary: it's an entertaining but rather far fetched proposal in an arxiv preprint not published anywhere but mentioned in a Scientific American op ed. Implausible for many reasons including its spectrum which is not the shiny spectrum you'd expect from a solar sail but the red of tholins mixed with rock and metal as you'd expect from an asteroid / comet.

I am getting many people contacting me scared of this asteroid, which was proved to miss Earth back on 1st August 2002! Right now, it is coming from below Earth's orbit, but not directly towards us. We are circling the sun at the same time. It crosses Earth's orbit ahead of us. By the time we get to the place where our orbits cross, it is already high above our orbit and moving away. It will be closest on 13th January, but even then it is at a vast distance of 61 million kilometers away. We already knew this back on 29 July, 2002,