The tweet, "Good Knight 🏰⚔️🛡️ https://t.co/KMQsfE7nau" by Philip J. Ball, is highly cryptic and lacks the necessary factual details to construct a journalistic piece.
My extensive web searches for "Philip J. Ball" confirm he is a well-known science writer. However, attempts to find any news, announcements, or context related to the phrase "Good Knight" or the medieval emojis in connection with his work, or any public event, were unsuccessful. The tweet does not correspond to a discernible news event such as a product launch, funding round, or corporate announcement that could be objectively reported.
Without a clear "who, what, when, where, and why" behind the tweet, and given that the embedded link cannot be resolved, I cannot gather the accurate and up-to-date information from reputable sources required to write a factual and comprehensive news article. The tweet appears to be either a personal statement, a metaphorical expression, or a highly subtle hint about an unannounced project that has not yet entered the public news domain.