Explores the basis behind an e-mail hoax on the close approach of Mars to Earth in October 2005. Inability of Mars to appear as large as the full moon; Variation on the distance between the planets in the close approach; Visibility of Mars in the sky durin...
Not a particularly favorable close approach Next month, on Jan. 15, Mars will be at opposition to the sun, when it will be in the sky all night; rising at sunset, reaching its highest point in the south in the middle of the night and setting at sunrise. Oppositions of Mars ...
Note that observers located close to the Northern/Southern visibility boundary of any given conjunction will find it difficult or impossible to observe because of low altitude and/or bright twilight. In the 'When Visible' column, a distinction is made between Dawn/Morning visibility and Dusk/...
Mars takes a little more than twice as long as the Earth to make one orbit around the Sun – both planets come close to each other once every 26 months. Mars rising above the northeastern horizon on the night of closest approach (October 29th) as seen at 10PM ET from mid-northern ...
(Fig.2a), precluding the existence of a water-rich layer within this depth range as the existence of water would strongly attenuate the radar signals and diminish the visibility of deeper reflections. The estimated low (less than 9) dielectric permittivity (Fig.2c) further supports the absence...
They occur close to the same degree every 19 years, and the last time we had a New Moon/Solar Eclipse in this particular degree and sign— while the North Node was traveling through Aries — was on April 8th, 2005. We will likely experience a resonance between now and that time —“re...
s Mars Color Imager55over the Tharsis volcanoes10. The seasonal observation of water-vapour enrichment over Tharsis17shows increased abundances around northern spring equinox (Ls 0°), consistent with the CaSSIS detections of frost close to this season in Olympus Mons. Therefore, we hypothesize that...
The shift in band position between different measuring modes is to be attributed to the known change in refractive index close to a spectral absorption, depending on the ratio of the reflection and transmission components constituting the final spectral signal. This has implications for orbiter ...
(Remember to allow your telescope's optics to cool to the outside temperature, so they don't become their own source of "boiling" air.) Mars won't be this close to Earth again until September 2035, a simple fact that motivates many a Mars-watcher to put eye to eyepiece every clear ...
This approach gives us reasonable results and is currently the best way to estimate the relative humidity this close to the surface from the GCM. However, recent work of Tamppari and Lemmon (2020) have shown that the near-surface water vapor is enhanced relative to higher layers. This means...